JHR 97: 849-880 (2024) ge JOURNAL OF semen smnscer doi: 10.3897/jhr.97.13538| RESEARCH ARTICLE () I Tymenopter a > https://jhr.pensoft.net ‘The International Society of Hymenopterisss RESEARCH The genus Lasioglossum Curtis, 1833 (Hymenoptera, Halictidae) in Azerbaijan Yulia V. Astafurova', Mahir M. Maharramov’, Maxim Yu. Proshchalykin? I Zoological Institute, Russian Academy of Sciences, Saint Petersburg 199034, Russia 2 Nakhchivan State University, Nakhchivan, AZ 7012, Azerbaijan 3 Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far East Branch of the Russian Academy of Sciences, Vladivostok 690022, Russia Corresponding author: Maxim Yu. Proshchalykin (proshchalikin@biosoil.ru) Academic editor: Jack Neff | Received 23 August 2024 | Accepted 29 September 2024 | Published 10 October 2024 https://zoobank. orgl/A2CAD339-15E2-4131-9F41-65FFC4246C97 Citation: Astafurova YuV, Maharramov MM, Proshchalykin MYu (2024) The genus Lasioglossum Curtis, 1833 (Hymenoptera, Halictidae) in Azerbaijan. Journal of Hymenoptera Research 97: 849-880. https://doi.org/10.3897/ jhr.97.135381 Abstract Available information about bees of the genus Lasioglossum in Azerbaijan is summarised. One hundred and one species are currently known from this country. Twenty-three species are newly recorded from the Caucasus region and additional eighteen species are newly recorded from Azerbaijan. Three species are excluded from the list of Azerbaijani fauna. A new synonymy is proposed for Lasioglossum euxinicum Ebmer, 1972 = L. alievi Pesenko, 1986, syn. nov., and a lectotype is designated for Halictus schelkovnikovi Kokujev, 1913. Keywords Anthophila, Apiformes, fauna, new records, new synonym, the Caucasus region Introduction The global genus Lasioglossum Curtis, 1833 currently includes 1,841 described species (Ascher and Pickering 2024), with the highest known diversity in the Holarctic region (Michener 2007). A total of 450 species are known from the Palaearctic re- gion (Astafurova and Proshchalykin 2017), of which 182 species occur in Europe (Astafurova and Proshchalykin 2023, 2024; Ghisbain et al. 2023), 168 species from Turkey, and 145 species from Iran (Ascher and Pickering 2024). Copyright Yulia V.Astafurova et al. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. 850 Yulia V. Astafurova et al. / Journal of Hymenoptera Research 97: 849-880 (2024) The Caucasus region is a mountainous area between the Black Sea and the Caspian Sea, considered part of the natural border between Europe and Asia. Geographically, it is usually considered part of western Asia, bordering north-eastern Turkey and north-western Iran. The northern edge of the Caucasus is known as the Ciscaucasus and the southern part as the Transcaucasus. The Ciscaucasus contains most of the Greater Caucasus mountain range, also known as the Great Caucasus. It includes the southern part of European Russia (Krasnodar Territory, Stavropol Territory, Adygea Republic, Karachayevo-Cherkessk Republic, Ingushetia Republic, Kabardino-Bal- karsk Republic, Severnaya Osetia Republic, Chechenskaya Republic, and Dagestan Republic) and northern parts of Georgia and Azerbaijan. The Transcaucasus is bor- dered by Russia to the north, the Black Sea and Turkey to the west, the Caspian Sea to the east and Iran to the south. It includes the Caucasus Mountains and the surrounding lowlands. All of Armenia, Azerbaijan (except the northern parts) and Georgia (except the northern parts) are part of the South Caucasus (Kuhlmann and Proshchalykin 2016; Lelej et al. 2022). The present paper is a part of the ongoing research of bees of the territory of Azerbaijan (Aliyev et al. 2017; Proshchalykin et al. 2019; Fateryga et al. 2020; Prosh- chalykin and Maharramov 2020; Maharramov et al. 2021, 2023). Azerbaijan has long been known to have a potentially rich bee fauna. However, there is no modern com- prehensive work that summarises all the information on the Lasioglossum mentioned in the literature. The present work has been compiled to provide a revised list of the Lasioglossum species found in Azerbaijan, to provide a critical assessment of previous literature records, and to analyse the composition of the Lasioglossum fauna of Azerbai- jan and its similarity with neighbouring countries. Halictus alpestris |=Lasioglossum costulatum] and H. truncaticollis [=L. truncati- colle] was the first species of the genus described from Azerbaijan (Morawitz 1877), and ten species and one subspecies have been described since from this area (Bliith- gen — five species and one subspecies; Pesenko — two species; Friese — one species; Kokujev — one species; Ebmer — one species), with eight of them still valid (Table 1). Sixty Lasioglossum species have been recorded from Azerbaijan so far (see “Published data” section below). In this paper we enumerate 101 species of the genus Lasioglossum, including 23 species newly recorded from the Caucasus region, and additional 18 species are newly recorded from Azerbaijan. Three species are excluded from the Azerbaijani fauna. Materials and methods The results presented in this paper are based on 2150 specimens collected in Azerbaijan and currently housed in the Zoological Institute, Russian Academy of Sciences (St. Pe- tersburg, Russia, ZISP), Federal Scientific Center of the East Asia Terrestrial Biodiver- sity, Far Eastern Branch of Russian Academy of Sciences (Vladivostok, Russia, FSCV) and the collection of the Institute of Zoology of the National Academy of Sciences of Azerbaijan (Baku, Azerbaijan, IZAB). Azerbaijani Lasioglossum 851 Table |. Taxa of the genus Lasioglossum described from Azerbaijan. Original spelling Current status Source Halictus acephaloides Bliithgen, 1931 valid, as Lasioglossum acephaloides (Bliithgen, 1931) — Astafurova and Proshchalykin 2018 Halictus alpestris Morawitz, 1877 junior synonym of Lasioglossum costulatum Astafurova and Proshchalykin 2018 (Kriechbaumer, 1873) Halictus ciscapus Bliithgen, 1931 valid, as Lasioglossum ciscapum (Bliithgen, 1931) Ebmer 2000 Halictus haesitans Bliithgen, 1931 junior synonym of Lasioglossum korbi (Bliithgen, 1929) Astafurova and Proshchalykin 2018 Halictus kussariensis Blithgen, 1925 valid, as Lasioglossum kussariense (Bliithgen, 1925) Ebmer 1970 Halictus ordubadensis Friese, 1916 valid, as Lasioglossum ordubadense (Friese, 1916) Ebmer 1995 Halictus schelkounikovi Kokujev, 1912 junior synonym of Lasioglossum anellum (Vachal, 1905) Ebmer 1981 Halictus talyschensis Blithgen, 1925 valid, as Lasioglossum talyschense (Bliithgen, 1925) Ebmer 1978 Halictus truncaticollis Morawitz, 1877 valid, as Lasioglossum truncaticolle (Morawitz, 1877) Astafurova and Proshchalykin 2018 Halictus zonulus sinister Blithgen, 1934 junior synonym of Lasioglossum zonulum (Smith, 1848) Ebmer 1970 Lasioglossum alievi Pesenko, 1986 junior synonym of Lasioglossum euxinicum Ebmer, 1972 current paper Lasioglossum euxanthopus Pesenko, 1986 valid Astafurova and Proshchalykin 2018 Lasioglossum muganicum Ebmer, 1972 valid Astafurova and Proshchalykin 2024 The subgeneric classification of Lasioglossum is based on the conclusions of Gibbs et al. (2013) and follows Zhang et al. (2022), Ghisbain et al. (2023) and Proshchalykin et al. (2023). Taxonomy, including subspecies status, follows Ebmer (1988, 1995), Pesenko et al. (2000), Pesenko (2006) and Pauly (2016). Distribution of Lasioglossum species is mainly based on Pauly (2016), Astafurova and Proshchalykin (2017, 2024), and Boustani et al. (2021) for Lebanon, with some additional references noted in the text. Subgenera and species are given in the text in alphabetical order. Labelling data for all specimens examined can be found in Suppl. material 1. Specimens were studied with an Olympus SZ51 stereomicroscope, and photo- graphs were taken with a combination of stereomicroscope (Olympus SZX10) and digital camera (Olympus OM-D). Final images are stacked composites generated using Helicon Focus v. 7.7.4 Pro. All images were post-processed for contrast and brightness using Adobe Photoshop. New distributional records are noted with an asterisk (*). Results Species list Genus Lasioglossum Curtis, 1833 Lasioglossum Curtis, 1833: pl. 448. Type species: Lasioglossum tricingulum Cuttis, 1833=Melitta xanthopus Kirby, 1802, by original designation. Subgenus Biennilaeus Pesenko, 2007 Lasioglossum marginatum (Brullé, 1832) Published data. Morawitz 1873: 165, as Halictus riparius (Azerbaijan); Aliyev et al. 2007: 255 (Azerbaijan). 852 Yulia V. Astafurova et al. / Journal of Hymenoptera Research 97: 849-880 (2024) Material examined. 180 2, 1 3. Distribution. Caucasus: Azerbaijan, Armenia, Georgia, Russia. — Southern and locally Central Europe, North Africa, Turkey, Russia (European part), Syria, Jordan, Israel, Lebanon, Iraq, Iran, Afghanistan, Pakistan, Central Asia, Northwestern India, Nepal. Remarks. One of the most common of Lasioglossum species in Azerbaijan. Subgenus Dialictus Robertson, 1902 Lasioglossum aeratum (Kirby, 1802) Published data. No records in Azerbaijan. Material examined. 1 9, 3 <. Distribution. Caucasus: *Azerbaijan, Russia. — Europe, Turkey, Russia (European part), Syria, Iran, Central Asia. Lasioglossum araxanum (Bliithgen, 1923) Published data. Bliithgen 1923: 244 (“Araxestal” [Aras River valley in Azerbaijan, Armenia and Iran]). Material examined. — Distribution. Caucasus: unknown country (Azerbaijan or Armenia). — Iran, Turkey, northern India (Bliithgen 1923; Warncke 1975). Lasioglossum hethiticum Ebmer, 1970 Published data. No records in Azerbaijan. Material examined. 1 <. Distribution. *Caucasus: Azerbaijan. — Turkey, Greece, Lebanon (Ghisban et al. 2023). Lasioglossum leucopus (Kirby, 1802) Published data. No records in Azerbaijan. Material examined. 16 9, 1 @. Distribution. Caucasus: *Azerbaijan, Russia. — Europe, Turkey, Russia (east to Yakutia), Iran. Lasioglossum morio (Fabricius, 1793) Published data. Ebmer 1988: 622 (Caucasus). Azerbaijani Lasioglossum 853 Material examined. 5 9, 11 3. Distribution. Caucasus: Azerbaijan, Armenia, Georgia, Russia. — Europe, Turkey, Russia (east to Altai), Israel, Lebanon [nominative subspecies]; North Africa, Spain [ssp. cordialie (Pérez, 1903)]. Lasioglossum podolicum (Noskiewicz, 1925) Published data. No records in Azerbaijan. Material examined. 2 9, 1 3. Distribution. *Caucasus: Azerbaijan. — Steppe of Europe east to Russia (Lipetsk Prov.), Turkey [nominative subspecies]; Iran [ssp. canus (Warncke, 1982)]. Lasioglossum talyschense (Bliithgen, 1925) Published data. Bliithgen 1925: 130, as Halictus talyschensis (Azerbaijan). Material examined. — Distribution. Caucasus: Azerbaijan. — Northeastern Turkey, Iran (Ebmer 1978; Warncke 1982). Subgenus Hemihalictus Cockerell, 1897 Lasioglossum adabaschum (Bliithgen, 1931) Published data. No records in Azerbaijan. Material examined. | 9. Distribution. *Caucasus: Azerbaijan. — Russia (Astrakhan Province, Kalmyk Re- public), Turkmenistan. Lasioglossum brevicorne (Schenck, 1869) Published data. Aliyev et al. 2007: 255 (Azerbaijan). Material examined. 9 9, 2 ¢. Distribution. Caucasus: Azerbaijan. — Europe, North Africa, Turkey, Israel, Leba- non, Russia (European part), Iran, Afghanistan [nominative subspecies]; Canary Is. [ssp. gomerense Ebmer, 1972]. Lasioglossum bluethgeni Ebmer, 1971 Published data. No records in Azerbaijan. Material examined. 2 9. 854 Yulia V. Astafurova et al. / Journal of Hymenoptera Research 97: 849-880 (2024) Distribution. Caucasus: *Azerbaijan, Georgia, Russia. — Southern and locally middle Europe, Ukraine, Lebanon, Turkey (Ebmer 2000). Lasioglossum ciscapum (Blithgen, 1931) Published data. Bliithgen 1931: 213 (Azerbaijan). Material examined. 4 9. Distribution. Caucasus: Azerbaijan. — Turkey, Russia (Astrakhan Prov., Kalmyk Rep.), southern Kazakhstan, Turkmenistan, Uzbekistan, Kyrgyzstan (Ebmer 2000). Lasioglossum clypeare (Schenck, 1853) Published data. Bliithgen 1935: 120 (Azerbaijan). Material examined. — Distribution. Caucasus: Azerbaijan, Georgia, Russia. — Southern and locally cen- tral Europe, Lebanon, Turkey, Russia (east to south Ural), Iran, Kyrgyzstan, Kazakhstan. Lasioglossum clypeiferellum (Strand, 1909) Published data. No records in Azerbaijan. Material examined. 50 2, 3 6. Distribution. *Caucasus: Azerbaijan. — Egypt, Macedonia, Greece, Crete, Leba- non, Israel, Syria (Hermon Mt.), Cyprus, Turkey, Iran, Afghanistan, Uzbekistan, Kyr- gyzstan, Tajikistan, Mongolia (Bytinski-Salz and Ebmer 1974; Ebmer 1980, 1982; Warncke 1982; Murao et al. 2017). Lasioglossum convexiusculum (Schenck, 1853) Published data. No records in Azerbaijan. Material examined. 4 9, 1 3. Distribution. *Caucasus: Azerbaijan. — Europe (except north), Lebanon, Turkey, Russia (east to the Urals), Iran. Remarks. The record of the species from Armenia (“Kasikoporan”) by Bliithgen (1935: 117) should be considered as a locality in Turkey. Lasioglossum corvinum (Morawitz, 1877) Published data. No records in Azerbaijan. Azerbaijani Lasioglossum 855 Material examined. 3 2. Distribution. Caucasus: *Azerbaijan, Armenia, Georgia, Russia. — Southern Eu- rope (north to Germany), North Africa, Lebanon, Caucasus, Turkey, Russia (Crimea, south of the European part), Iran (Morawitz 1877; Skhirtladze 1981; Ebmer 1988; Sill6 2024). Lasioglossum crassepunctatum (Blithgen, 1923) Published data. Bliithgen 1923: 280, as Halictus crassepunctatus (Azerbaijan); Ebmer 2000: 435 (Azerbaijan). Material examined. 10 9, 1 ¢. Distribution. Caucasus: Azerbaijan, Russia. — Southern and Central Europe, Israel, Lebanon, Jordan, Turkey, Russia (Crimea, central and south of the European part), Iran. Lasioglossum croceipes (Morawitz, 1876) Published data. Bliithgen 1923: 246, as Halictus longiceps (“Araxestal” [Aras River val- ley in Azerbaijan, Armenia and Iran]). Material examined. — Distribution. Caucasus: unknown country (Azerbaijan or Armenia). — Turkey, Iran, Afghanistan, Kazakhstan, Turkmenistan, Uzbekistan, Tajikistan, Kyrgyzstan (Eb- mer 1997; Murao et al. 2017). Lasioglossum elegans (Lepeletier, 1841) Published data. Aliyev et al. 2007: 255 (Azerbaijan). Material examined. | 9. Distribution. Caucasus: Azerbaijan, Georgia. — Southern and locally Cen- tral Europe, North Africa, Turkey, Russia (south of the European part), Iran, Turkmenistan. Lasioglossum griseolum (Morawitz, 1872) Published data. No records in Azerbaijan. Material examined. 12 9. Distribution. Caucasus: Azerbaijan, Georgia, Russia. — Eastern and South Europe, Turkey, Israel, Lebanon, Russia (south of the European part), Iran, Afghanistan, Ka- zakhstan, Kyrgyzstan, [nominative subspecies]; North Africa, Saudi Arabia [ssp. mus- culum (Blithgen, 1924)]. 856 Yulia V. Astafurova et al. / Journal of Hymenoptera Research 97: 849-880 (2024) Lasioglossum hilare Ebmer, 1972 Published data. Ebmer 2014: 339 (Azerbaijan). Material examined. 1 9. Distribution. Caucasus: Azerbaijan. — Macedonia, Greece, Jordan, Turkey, Iran, Afghanistan, Kazakhstan, Uzbekistan, Kyrgyzstan (Ebmer 2014). Lasioglossum intermedium (Schenck, 1869) Published data. No records in Azerbaijan. Material examined. | 9. Distribution. Caucasus: *Azerbaijan, Russia. — Europe, Turkey, Iran. Lasioglossum laevidorsum (Blithgen, 1923) Published data. Bliithgen 1923: 257 (“Araxestal” [Aras River valley in Azerbaijan, Armenia and Iran]); Aliyev et al. 2007: 255 (Azerbaijan). Material examined. — Distribution. Caucasus: Azerbaijan, Armenia. — Southern Europe, Lebanon, east- ern Turkey, Iran [nominative subspecies]; Middle Europe [ssp. priesneriellum (Warncke, 1981)]; Egypt, Iran [ssp. katharinae Ebmer, 1974]; Cyprus [ssp. troodicum (Blithgen, 1938)]. The Balkan (Macedonia, Greece) populations are intermediate ones between ssp. laevidorsum and ssp. priesneriellum (Ebmer 1988). Lasioglossum limbellum (Morawitz, 1876) Published data. No records in Azerbaijan. Material examined. 15 9, 15 ¢. Distribution. Caucasus: *Azerbaijan, Russia. - Southeastern Europe, Israel, Tur- key, Russia (south of the European part), Iran, Afghanistan, Kazakhstan, Uzbekistan, Tajikistan, China (Gansu) [nominative subspecies]; North Africa, southwestern Eu- rope [ssp. ventrale (Pérez, 1903)]. Lasioglossum lucidulum (Schenck, 1861) Published data. Aliyev et al. 2007: 255 (Azerbaijan). Material examined. 14 9, 12 3. Distribution. Caucasus: Azerbaijan, Russia. — Europe, Israel, Lebanon, Turkey, Russia (east to western Siberia), Iran, Afghanistan, Pakistan, Central Asia, Mongolia, Northern China. Azerbaijani Lasioglossum 857 Lasioglossum maculipes (Morawitz, 1876) Published data. No records in Azerbaijan. Material examined. 2 9. Distribution. *Caucasus: Azerbaijan. — Southeastern Turkmenistan, Tajikistan, Uzbekistan, Iran, Afghanistan (Ebmer 1986). Lasioglossum medinai (Vachal, 1895) Published data. No records in Azerbaijan. Material examined. 45 9, 1 3. Distribution. *Caucasus: Azerbaijan. — North Africa, Southern Europe, Russia (south of the European part), Israel. Lasioglossum mesosclerum (Pérez, 1903) Published data. Bliithgen 1931: 319 (Azerbaijan); Ebmer 2000: 418 (Azerbaijan). Material examined. 19 9, 3 3. Distribution. Caucasus: Azerbaijan, Armenia, Georgia, Russia. — Southern and Central Europe, North Africa, Syria, Jordan, Israel, Lebanon, Turkey, Russia (south of the European part), Iran, Afghanistan, Central Asia. Lasioglossum nitidiusculum (Kirby, 1802) Published data. No records in Azerbaijan. Material examined. 5 9, 3 ¢. Distribution. Caucasus: “Azerbaijan, Russia. — Europe, North Africa, Lebanon, Turkey, Russia (east to the Altai), Kazakhstan, Turkmenistan, Iran [nominative sub- species]; Sardinia [ssp. pseudocombinatus (Bliithgen, 1921)] (Ebmer 2011; Murao et al. 2017). Lasioglossum parvulum (Schenck, 1853) Published data. No records in Azerbaijan. Material examined. 1 9, 6 3d Distribution. Caucasus: *Azerbaijan, Armenia, Russia. - Europe, Turkey, Russia (east to the Urals), Iran. 858 Yulia V. Astafurova et al. / Journal of Hymenoptera Research 97: 849-880 (2024) Lasioglossum peregrinum (Bliithgen, 1923) Published data. No records in Azerbaijan. Material examined. 4 9. Distribution. Caucasus: *Azerbaijan, Armenia, Georgia. — Southern Europe, Israel, Turkey, Iran (Ebmer 1997). Lasioglossum popovi (Bliithgen, 1931) Published data. No records in Azerbaijan. Material examined. 3 2. Distribution. *Caucasus: Azerbaijan. — Southern Kazakhstan, Turkmenistan, Uzbekistan (Bliithgen 1931). Lasioglossum punctatissimum (Schenck, 1853) Published data. No records in Azerbaijan. Material examined. 6 9, 1 3. Distribution. Caucasus: *Azerbaijan, ?Armenia, ?Georgia. — Europe, Israel, Leba- non, Turkey, Russia (east to the Urals), Iran [nominative subspecies]; North Africa, Iberian Peninsula, Sicily [ssp. angustifrons (Vachal, 1892)]. Remarks. This species was recorded without locality for the Caucasus by Bytinski- Salz and Ebmer (1974: 192). Lasioglossum puncticolle (Morawitz, 1872) Published data. No records in Azerbaijan. Material examined. 12 9. Distribution. Caucasus: *Azerbaijan, Georgia, Russia. — Europe, North Africa, Syria, Lebanon, Turkey, Russia (east to the Urals), Iran. Lasioglossum pygmaeum (Vachal, 1905) Published data. Bliithgen 1925: 112, as Halictus denislucus; Ebmer 2000: 410 (Azerbaijan). Material examined. 57 2,5 3. Distribution. Caucasus: Azerbaijan, Armenia, Georgia [ssp. patulum (Vachal, 1905)]. — North Africa, southern and locally Central Europe [nominative subspecies]; southeastern Europe, Russia (Crimea, south of the European part), Caucasus, Turkey, Syria, Jordan, Lebanon, Iran, Afghanistan, Pakistan, Central Asia [ssp. patulum (Vachal, 1905)]. Azerbaijani Lasioglossum 859 Lasioglossum quadrinotatulum (Schenck, 1861) Published data. No records in Azerbaijan. Material examined. 1 9. Distribution.*Caucasus: Azerbaijan. — Europe, Turkey, Russia (east to eastern Siberia), North China. Lasioglossum quadrisignatum (Schenck, 1853) Published data. Ebmer 1997: 954 (Azerbaijan). Material examined. 1 9, 1 ¢. Distribution. Caucasus: Azerbaijan, Armenia, Georgia. — Europe, Turkey, Russia (central and south of the European part), Iran. Lasioglossum rufitarse (Zetterstedt, 1838) Published data. Ebmer and Sakagami 1985: 308 (Azerbaijan). Material examined. 2 9, 17 6. Distribution. Caucasus: Azerbaijan, Russia. — Europe, Russia (east to the Far East), Turkey, Iran, Kazakhstan, Mongolia, China (NE, SE), North Korea, Canada, USA (Ebmer 2011). Lasioglossum semilucens (Alfken, 1914) Published data. Ebmer 1988: 663 (Azerbaijan). Material examined. — Distribution. Caucasus: Azerbaijan, Russia. — Europe, Russia (European part), Turkey, Afghanistan, Tajikistan, Kyrgyzstan, Kazakhstan (Ebmer 2014). Lasioglossum stolidum (Warncke, 1982) Published data. No records in Azerbaijan. Material examined. 2 9. Distribution. “Caucasus: Azerbaijan. — Israel, Turkey (Warncke 1982, 1984). Lasioglossum subaenescens (Pérez, 1895) Published data. Ebmer 1997: 933 (Azerbaijan). 860 Yulia V. Astafurova et al. / Journal of Hymenoptera Research 97: 849-880 (2024) Material examined. 8 9, 3 ¢. Distribution. Caucasus: Azerbaijan [ssp. asiaticum (Dalla Torre, 1896)]. — South- ern Europe [nominative subspecies, the transgression zone is situated in Macedonia, Bulgaria (Ebmer 1988, 1997)]; Greece, Ukraine, Egypt, Turkey, Near East, Iran, Rus- sia (Crimea, south of the European part), Central Asia, Mongolia, China (Xinijang) [ssp. asiaticum (Dalla Torre, 1896)]. Lasioglossum tarsatum (Schenck, 1869) Published data. No records in Azerbaijan. Material examined. 1 9. Distribution. *Caucasus: Azerbaijan. — Europe, Russia (European part), Afghanistan. Lasioglossum transitorium (Schenck, 1869) Published data. No records in Azerbaijan. Material examined. 2 9. Distribution. *Caucasus: Azerbaijan [ssp. uncinum (Vachal, 1905)]. — Balkans and European part of Turkey [nominative subspecies]; Morocco, Algeria, Tunis, Libya, Portugal, Spain, France, Italy, Sicily, Switzerland [ssp. planulum (Pérez, 1903), trans- gression zone in southern Tirol)]; Egypt, Crete, Syria, Jordan, Lebanon, Israel, Cyprus, Turkey [ssp. uncinum]. Lasioglossum truncaticolle (Morawitz, 1877) Published data. Morawitz 1877: 90 (Azerbaijan). Material examined. 30 9. Distribution. Caucasus: Azerbaijan, Armenia, Georgia. — Southern and _ lo- cally central Europe, North Africa, Syria, Israel, Lebanon, Caucasus, Turkey, Russia (Crimea, south of the European part), Iran, Kazakhstan. Lasioglossum villosulum (Kirby, 1802) Published data. No records in Azerbaijan. Material examined. 2 <. Distribution. Caucasus: *Azerbaijan, Russia. — Europe, North Africa, Syria, Israel, Lebanon, Turkey, Russia (east to the Far East), Iran, Afghanistan, Tajikistan, Mongolia, China, Korea, Japan, India, Nepal, Malaysia, Canada, USA. Azerbaijani Lasioglossum 861 Remarks. The previous record of the species from the Caucasus (Georgia) by Skhirtladze (1981: 42) may refer to L. medinai. Subgenus Lasioglossum s. str. Lasioglossum acephaloides (Bliithgen, 1931) Published data. Bliithgen 1925: 100, as Halictus acephalus; 1931: 346; Aliyev et al. 2007: 254 (Azerbaijan). Material examined. — Distribution. Caucasus: Azerbaijan, Armenia, Georgia, Russia. — Turkey (Bliith- gen 1925, 1931; Warncke 1975). Remarks. This species was described by Bliithgen (1931: 346) from Azerbaijan (Helendorf [Goygol]) and Russia (Prikumsk [Stavropol Terr., Budenovsk]), but was overlooked in the catalogue of Russian bees (Astafurova and Proshchalykin 2017; Proshchalykin et al. 2023). Lasioglossum argaeum (Blithgen, 1931) Published data. No records in Azerbaijan. Material examined. | 9. Distribution. *Caucasus: Azerbaijan. — Turkey (Bliithgen 1931; Warncke 1984). Lasioglossum bicallosum (Morawitz, 1873) Published data. Pesenko 1986: 124 (Caucasus). Material examined. | 9. Distribution. Caucasus: Azerbaijan, Armenia, Georgia, Russia. — Southeastern Europe, Israel, Turkey, Russia (Crimea, south of the European part), Iran. Remarks. This species was recorded without locality for the Caucasus by Pesenko (1986: 124). Lasioglossum caspicum (Morawitz, 1873) Published data. Bliithgen 1923: 266; Aliyev et al. 2007: 254 (Azerbaijan); Pesenko 1986: 124 (Caucasus). Material examined. 17 °. Distribution. Caucasus: Azerbaijan, Armenia, Georgia, Russia. — Israel, Lebanon, Syria, Turkey, Turkmenistan, Iran, Afghanistan. 862 Yulia V. Astafurova et al. / Journal of Hymenoptera Research 97: 849-880 (2024) Lasioglossum cristula (Pérez, 1895) Published data. Bliithgen 1925: 87, as Halictus cristula; 1929: 55, as H. korbi (Azer- baijan); Pesenko 1986: 125 (Caucasus). Material examined. 3 9, 2 ¢. Distribution. Caucasus: Azerbaijan, Armenia, Georgia, Russia. — Syria, Israel, Lebanon, Turkey, Iran [ssp. donatum (Warncke, 1975)]; North Africa, southern Eu- rope [nominative subspecies] (Pesenko 1986). Lasioglossum costulatum (Kriechbaumer, 1873) Published data. Pesenko 1986: 137 (Caucasus). Material examined. 2 9, 1 3. Distribution. Caucasus: Azerbaijan, Armenia, Georgia, Russia. — Europe, North Africa, Lebanon, Turkey, Syria, Russia (east to Eastern Siberia), Iran, Central Asia. Remarks. ‘This species was recorded without locality for the Caucasus by Pesenko (1986: 137). Lasioglossum fallax (Morawitz, 1873) Published data. Pesenko 1986: 131 (Caucasus). Material examined. 2 9, 4 3. Distribution. Caucasus: Azerbaijan, Armenia, Georgia, Russia. — South Russia (east to the Urals), Turkey, Iran, Turkmenistan [nominative subspecies]; Kazakhstan, Uzbekistan, Tajikistan, Kyrgyzstan, Afghanistan, Mongolia [ssp. melanarium (Mora- witz, 1876)]; Pakistan [ssp. rhadiourgon Ebmer, 1980] (Ebmer 1998). Remarks. This species was recorded without locality for the Caucasus by Pesenko (1986: 137). Lasioglossum equestre (Morawitz, 1876) Published data. No records in Azerbaijan. Material examined. | 9. Distribution. *Caucasus: Azerbaijan. — Turkey, Uzbekistan, Tajikistan, Kyrgyzstan, southeastern Kazakhstan (Pesenko 1986). Lasioglossum euxanthopus Pesenko, 1986 Published data. Pesenko 1986: 127 (Azerbaijan). Material examined. — Azerbaijani Lasioglossum 863 Distribution. Caucasus: Azerbaijan. — Southwestern Turkmenistan (Pesenko 1986). Lasioglossum euxinicum Ebmer, 1972 Lasioglossum euxinicum Ebmer, 1972: 233, 2 (holotype: 9, Sevastopol, Crimea). Lasioglossum alievi Pesenko, 1986: 128, fig. 14, 9 (holotype: 2, Azerbaijan: Istisu; ZISP), examined, syn. nov. Published data. Ebmer 1978: 38; 1981: 115 (Ordubad, Azerbaijan); Pesenko 1986, as L. alievi; Aliyev et al. 2007: 254 (Azerbaijan). Material examined. Holotype of Lasioglossum alievi Pesenko. Distribution. Caucasus: Azerbaijan. — Morocco, Italy, Russia (Crimea), Iran (Pesenko 1986). Taxonomical note. Pesenko (1986: 128) described Lasioglossum alievi from Azer- baijan and noted that this species has a black (without metallic lustre) body. However, the holotype of L. alievi has a weak metallic lustre on the head and mesoscutum (see figs 59c, d in Astafurova and Proshchalykin 2018: 54). A.W. Ebmer examined the type in 1988 and labelled the specimen as Lasioglossum euxinicum ssp. euxinicum, but did not publish the synonymy. Although Pesenko (2007) considered this species to be valid, we have supported Ebmer’s opinion and Lasioglossum alievi Pesenko, 1986 is established here as a junior synonym for L. euxinicum Ebmer, 1972. Lasioglossum korbi (Bliithgen, 1929) Published data. Bliithgen 1931: 348, as Halictus haesitans; Pesenko 1986: 123 (Azerbaijan). Material examined. 28 92,5 3. Distribution. Caucasus: Azerbaijan, Russia. — Turkey (Pesenko 1986). Lasioglossum kussariense (Bliithgen, 1925) Published data. Bliithgen 1925: 96 (Azerbaijan), Pesenko 1986: 122 (Caucasus). Material examined. | 9. Distribution. Caucasus: Azerbaijan, Armenia, Georgia, Russia. — Middle and southeastern Europe, Lebanon, Turkey (Bliithgen 1925, 1931; Ebmer 1988). Lasioglossum laevigatum (Kirby, 1802) Published data. Pesenko 1986: 139 (Caucasus). Material examined. 9 9,5 ¢. 864 Yulia V. Astafurova et al. / Journal of Hymenoptera Research 97: 849-880 (2024) Distribution. Caucasus: Azerbaijan, Armenia, Georgia, Russia. — Europe, Turkey, Russia (east to the Urals), Iran. Remarks. This species was recorded without locality for the Caucasus by Pesenko (1986: 139). Lasioglossum lativentre (Schenck, 1853) Published data. Pesenko 1986: 123 (Caucasus). Material examined. 17 2, 2 6. Distribution. Caucasus: Azerbaijan, Armenia, Georgia, Russia. — Europe, Turkey, Russia (Crimea, European part), Near East, Iran. Remarks. This species was recorded without locality for the Caucasus by Pesenko (1986: 123). Lasioglossum prunellum (Watncke, 1975) Published data. Ebmer 1981: 114 (Azerbaijan). Material examined. — Distribution. Caucasus: Azerbaijan. — Greece, Turkey (Ebmer 1981). Lasioglossum quadrinotatum (Kirby, 1802) Published data. Pesenko 1986: 124 (Caucasus); Aliyev et al. 2007: 254 (Azerbaijan). Material examined. 5 °. Distribution. Caucasus: Azerbaijan, Armenia, Georgia, Russia. — Europe, Turkey, Russia (east to the Urals), Iran, Kazakhstan. Lasioglossum sexnotatum (Kirby, 1802) Published data. Pesenko 1986: 127 (Caucasus); Aliyev et al. 2007: 254 (Azerbaijan); Ebmer 2014: 316 (Azerbaijan). Material examined. 4 9. Distribution. Caucasus: Azerbaijan, Armenia, Georgia, Russia. — Europe, Crete, Turkey, Russia (Crimea, European part), Turkmenistan, Iran (Pesenko 1986; Ebmer 2014). Lasioglossum subfasciatum (Imhoff, 1832) Published data. Pesenko 1986: 127 (Caucasus). Material examined. 1 9. Azerbaijani Lasioglossum 865 Distribution. Caucasus: Azerbaijan, Armenia, Georgia. — Middle and southern Europe, Near East, Turkey, Iran (Warncke 1975; Ebmer 1978). Remarks. This species was recorded without locality for the Caucasus by Pesenko (1986: 127). Lasioglossum tungusicum Ebmer, 1978 Published data. Ebmer 1982: 209; Pesenko 1986: 129 (Azerbaijan). Material examined. | 9. Distribution. Caucasus: Azerbaijan, Armenia. — Russia (east to Amur Prov.), Tur- key, Iran, Kazakhstan, Mongolia, China. Lasioglossum xanthopus (Kirby, 1802) Published data. Skhirtladze 1981: 43; Aliyev et al. 2007: 254; Pesenko 1986: 126 (Caucasus). Material examined. 9 9. Distribution. Caucasus: Azerbaijan, Armenia, Georgia, Russia. — Europe, North Africa, Turkey, Israel, Lebanon, Russia (east to the Urals), Iran, Pakistan, Central Asia, Mongolia, Northwestern China. Subgenus Leuchalictus Warncke, 1975 Lasioglossum aegyptiellum (Strand, 1909) Published data. Pesenko 1986: 140 (Caucasus). Material examined. 16 9, 2 ¢. Distribution. Caucasus: Azerbaijan, Armenia, Georgia, Russia. — North Africa, Lebanon, Turkey, Russia (Crimea, Kalmyk Rep.), Near East, Iran, Iraq, Turkmenistan. Remarks. ‘This species was recorded without locality for the Caucasus by Pesenko (1986: 140). Lasioglossum discus (Smith, 1853) Published data. Pesenko 1986: 140 (Caucasus ). Material examined. 1 9,5 ¢. Distribution. Caucasus: Azerbaijan, Armenia, Georgia, Russia. — Europe (except north), North Africa, Turkey, Israel, Lebanon, Russia (east to Eastern Siberia), Iran, Afghanistan, Central Asia, Northwestern China. Remarks. This species was recorded without locality for the Caucasus by Pesenko (1986: 140). 866 Yulia V. Astafurova et al. / Journal of Hymenoptera Research 97: 849-880 (2024) Lasioglossum leucozonium (Schrank, 1781) Published data. Pesenko 1986: 143, as L. tadschicum; Aliyev et al. 2007: 254 (Azer- baijan); Pesenko 1986: 143 (Caucasus). Material examined. 21 9, 17 <. Distribution. Caucasus: Azerbaijan, Armenia, Georgia, Russia. — Europe, North Africa, Near East, Turkey, Russia (east to the Far East), Iran, Afghanistan, Pakistan, North India, Central Asia, Mongolia, NW China, North America. Lasioglossum picipes (Morawitz, 1876) Published data. No records in Azerbaijan. Material examined. 1 <. Distribution. *Caucasus: Azerbaijan. — Israel, Turkey, Iraq, Iran, Afghanistan Turkmenistan, Uzbekistan, Tajikistan (Pesenko 1986). Lasioglossum zonulus (Smith, 1848) Published data. Pesenko 1986: 142 (Caucasus); Aliyev et al. 2007: 254 (Azerbaijan). Material examined. 10 9, 14 . Distribution. Caucasus: Azerbaijan, Armenia, Georgia, Russia. — Europe, Turkey, Russia (east to Eastern Siberia), Iran, Central Asia, China, North America. Subgenus Pyghalictus Warncke, 1975 Lasioglossum glabriusculum (Morawitz, 1872) Published data. No records in Azerbaijan. Material examined. 96 9°, 32 <. Distribution. Caucasus: *Azerbaijan, Georgia, Russia. — Europe (except north), Syria, Jordan, Israel, Lebanon, Turkey, Russia (south of the European part), Iran [nom- inative subspecies]; North Africa [ssp. u/traparvus (Cockerell, 1938)]. Lasioglossum mandibulare (Morawitz, 1866) Published data. Aliyev et al. 2007: 256 (Azerbaijan). Material examined. 2 9. Distribution. Caucasus: Azerbaijan, Armenia, Russia. — Southern Europe, North Africa, Turkey, Israel, Iraq, Russia (south of the European part), Turkmenistan, Kazakhstan, north-western China (Ebmer 1988, 2014; Murao et al. 2017). Azerbaijani Lasioglossum 867 Lasioglossum politum (Schenck, 1853) Published data. No records in Azerbaijan. Material examined. 101 9, 11 d. Distribution. Caucasus: *Azerbaijan, Georgia, Russia. — Europe (except north), Russia (east to the Urals) [nominative subspecies]; North Africa, Near East, Asia Mi- nor, Uzbekistan, Tajikistan, Kyrgyzstan, Iran [ssp. atomarium (Morawitz, 1876)]; Eastern China, Japan [ssp. pekingense (Bliithgen, 1925)]. Subgenus Rostrohalictus Warncke, 1975 Lasioglossum longirostre (Morawitz, 1876) Published data. Skhirtladze 1981: 34 (Azerbaijan). Material examined. 16 9, 1 @. Distribution. Caucasus: Azerbaijan, Armenia, Georgia. — Greece, Lebanon, Is- rael, Turkey, Iran, Kazakhstan, Kyrgyzstan, Uzbekistan, Tajikistan, Afghanistan, China (Morawitz 1876; Bliithgen 1931; Warncke 1982; Nu et al. 2020). Subgenus Sphecodogastra Ashmead, 1899 Lasioglossum albipes (Fabricius, 1781) Published data. Aliyev et al. 2007: 255 (Azerbaijan). Material examined. 7 2, 8 <. Distribution. Caucasus: Azerbaijan, Georgia, Russia. — Europe, North Africa, Turkey, Russia (European part, Urals, Siberia), Iran, Central Asia, Mongolia, North China, Korea, Japan; Russia (Far East) [ssp. villosum Ebmer, 1995]. Lasioglossum anellum (Nachal, 1905) Fig. 1A—D Published data. Kokujev 1913: 5, as Halictus schelkovnikovi (Azerbaijan); Bliithgen 1923: 295; 1931: 322 (Azerbaijan); Ebmer 1995: 602 (Azerbaijan). Material examined. Lectotype (designated here), 1 2, Halictus schelkovnik- ovi Kokujev, 1913 // 2623 Apenmrcx.|nit| y.[e34] [Azerbaijan, Areshsky distr.] A.b. ILeaxos.[Hukos] [A.B. Shelkovnikov leg.] // H. schelkovnikovi Kok. //«.[oAaekrna] Koxyesa [collection of Kokujev] // = anellus Vach. 9, Bliithgen det. 1996 // Lectotypus Halictus schelkovnikovi Kokujev, 1913 design. Astafurova et Proshchalykin, 2024 // Zoological Institute St. Petersburg INS_ HYM_0002719. 20°9 Wit of Lasioglossum anellum. 868 Yulia V. Astafurova et al. / Journal of Hymenoptera Research 97: 849-880 (2024) | “Kk. Koxyesa [2 anelus Vek. £ Bluthgen, det.1936, Zoological Institute St. Petersburg — INS_HYM_0002719 Figure |. Halictus schelkovnikovi Kokujev, 1913, lectotype, female A, C habitus, lateral (A) and dorsal (C) views B head, frontal view D labels. Scale bar: 1.0 mm. Distribution. Caucasus: Azerbaijan, Georgia, Russia. — Southeastern Europe, Russia (south of the European part), Turkey, Israel, Lebanon, Syria, Jordan, Iran. Remarks. Halictus schelkovnikovi Kokujev, 1913 was described from Azerbaijan and this name was synonymized with Lasioglossum anellum (Vachal, 1905) by Bliithgen (1931: 212). Information on type specimens of Halictus schelkovnikovi Kokujev, 1913 was missing from Astafurova and Poshchalykin (2018). This specimen was recently found in the Halictidae collection of the ZISP and is designated here as lectotype (Fig. 1A—D). Lasioglossum calceatum (Scopoli, 1763) Published data. Skhirtladze 1981: 29 (Azerbaijan). Material examined. 21 9,6 3. Distribution. Caucasus: Azerbaijan, Georgia, Russia. — Europe, North Africa, Turkey, Russia (east to Kuril Islands), Iran, Central Asia, Mongolia, North China, Korea, Japan. Azerbaijani Lasioglossum 869 Lasioglossum edessae Ebmer, 1974 Published data. No records in Azerbaijan. Material examined. 24 9, 81 ¢. Distribution. “Caucasus: Azerbaijan. — Turkey, Iran (Ebmer 1995). Lasioglossum epipygiale (Bliithgen, 1924) Published data. Bliithgen 1924: 275 (“Araxestal” [Aras River valley in Azerbaijan, Armenia and Iran]). Material examined. — Distribution. Caucasus: ?Azerbaijan, Armenia. — Israel, Lebanon, Iran, Tur- key, Syria [nominative subspecies]; Southern Iran [?ssp. bentoni (Cockerell, 1919)]; Afghanistan, Pakistan [ssp. quettense (Bliithgen 1929)]; Pakistan, Northern India, Nepal [ssp. massuriensis (Bliithgen 1926)] (Ebmer 1995). Lasioglossum euboeense (Strand, 1909) Published data. Bliithgen 1924: 276 (Azerbaijan). Material examined. 3 9, 2 ¢. Distribution. Caucasus: Azerbaijan, Russia. — Europe (except north), North Af- rica, Lebanon, Turkey, Russia (south and east of the European part), Iran. Lasioglossum fulvicorne (Kirby, 1802) Published data. Aliyev et al. 2007: 255 (Azerbaijan). Material examined. 17 <. Distribution. Caucasus: Azerbaijan, Armenia, Georgia, Russia. — Europe, Russia (European part), Turkey, Turkmenistan [nominative subspecies]; Armenia, NE Turkey, Iran [ssp. antelicum (Warncke, 1975)]; Russia (from Altai to Far East), Mongolia [ssp. melanocorne Ebmer, 1988]; Taiwan [ssp. koshunochare (Strand, 1914)]. Lasioglossum fratellum (Pérez, 1903) Published data. No records in Azerbaijan. Material examined. 22 <3. Distribution. Caucasus: *Azerbaijan, Russia. — Europe, Turkey, Russia (east to Eastern Siberia) [nominative subspecies]; Russia (Kamchatka Terr., Yakutia, Primorskii Terr.), North Korea [ssp. betulae Ebmer, 1978]. 870 Yulia V. Astafurova et al. / Journal of Hymenoptera Research 97: 849-880 (2024) Remarks. Widespread in the Palaearctic region, this species is known only from the Cau- casus Mountains, where the southern limit of the species’ distribution is probably located. Lasioglossum hyalinipenne (Morawitz, 1876) Published data. No records in Azerbaijan. Material examined. 2 9. Distribution. *Caucasus: Azerbaijan. — Kazakhstan, Kyrgyzstan, Uzbekistan, Tajikistan, Afghanistan, Iran (Morawitz 1876; Bliithgen 1931; Ebmer 1974, 1978; Murao et al. 2017). Lasioglossum imbecillum Ebmer, 1974 Published data. No records in Azerbaijan. Material examined. 9 9, 11 3. Distribution. *Caucasus: Azerbaijan. — Bulgaria, Macedonia, Greece, Cyprus, Jordan, Turkey, Afghanistan (Ebmer 1995, 2014). Lasioglossum interruptum (Panzer, 1798) Published data. No records in Azerbaijan. Material examined. 13 2, 3 3. Distribution. Caucasus: *Azerbaijan [nominative subspecies], Armenia [ssp. trispinosus (Alfken, 1907)].— Europe, North Africa, Lebanon, Russia (Crimea, European part) [nomi- native subspecies]; Romania, Syria, Turkey, Iran [ssp. trispinosus] (Ebmer 1988, 1995). Lasioglossum laticeps (Schenck, 1869) Published data. Bliithgen 1924: 280; Warncke 1982: 124, as L. debilior; Ebmer 1995: 562, as L. debilior (Kussary, Azerbaijan). Material examined. 9 9, 39 3. Distribution. Caucasus: Azerbaijan, Georgia Armenia, [ssp. debilior (Pérez, 1910)], Russia. — Europe, Russia (east to Ural) [nominative subspecies]; Crete, Israel, Syria, Lebanon, Greece, Cyprus, Turkey, Iran [ssp. debilior, transgression zone is situ- ated in Greece, Turkey, Armenia and Georgia (Ebmer 1995)]. Remarks. According to Ebmer (2014: 323) Lasioglossum debilior (Pérez, 1910) is probably asenior synonym of L. /aticeps ssp. hellenicus (Bliithgen, 1938).A. Pauly (2016), who re-examined the type, noted that the type specimens appears to be suitable. We support this opinion and consider L. debilior as a synonym of L. laticeps ssp. hellenicus. Azerbaijani Lasioglossum 871 Lasioglossum laeve (Kirby, 1802) Published data. No records in Azerbaijan. Material examined. 1 9,5 ¢. Distribution. Caucasus: *Azerbaijan, Armenia, Georgia. — Europe, Russia (east to Altai), Lebanon, Israel, Syria, Turkey, Iran. Lasioglossum lineare (Schenck, 1869) Published data. Bliithgen 1924: 278 (Azerbaijan). Material examined. 8 9. Distribution. Caucasus: Azerbaijan, Armenia, Georgia. — Europe, Turkey, Syria, Israel, Lebanon, Russia (Crimea, European part), Iran, Turkmenistan. Lasioglossum leucopymatum (Dalla Torre, 1896) Published data. No records in Azerbaijan. Material examined. 11 9, 1 <. Distribution. *Caucasus: Azerbaijan. — Afghanistan, Kazakhstan, Turkmenistan, Uzbekistan (Ebmer 1995). Lasioglossum malachurum (Kirby, 1802) Published data. Aliyev et al. 2007: 255 (Azerbaijan). Material examined. 389 9, 65 3. Distribution. Caucasus: Azerbaijan, Georgia, Russia. — Europe, North Africa, Turkey, Israel, Lebanon, Russia (Crimea, European part), Iran, Turkmenistan. Remarks. ‘This is one of the most common Lasioglossum species with a long flight period from late March to November. Lasioglossum mediterraneum (Bliithgen, 1926) Published data. No records in Azerbaijan. Material examined. 6 9, 3 ¢. Distribution. *Caucasus: Azerbaijan. — North Africa, southern Europe (Ebmer 1976, 1985). Remarks. ‘The records from Israel, Turkey and Iran (Bytinski-Salz and Ebmer 1974; Warncke 1975) are based on misidentifications of Lasioglossum laticeps ssp. hellenicum. 872 Yulia V. Astafurova et al. / Journal of Hymenoptera Research 97: 849-880 (2024) Lasioglossum muganicum Ebmer, 1972 Published data. Ebmer 1972: 239 (Azerbaijan). Material examined. 39 9, 8 3. Distribution. Caucasus: Azerbaijan. — Greece, Turkey, Russia (Astrakhan Prov., Kalmyk Rep.), Iran. Remarks. The status of the species was restored by Astafurova and Proshchalykin (2024: 238). Lasioglossum nigripes (Lepeletier, 1841) Published data. Bliithgen 1924: 275 (Azerbaijan). Material examined. 11 9, 4 <. Distribution. Caucasus: Azerbaijan, Armenia, Georgia, Russia. — Europe, North Africa, Turkey, Jordan, Syria, Lebanon, Israel, Russia (Crimea, south of the European part), Iran, Turkmenistan, Kazakhstan. Lasioglossum obscuratum (Morawitz, 1876) Published data. Ebmer 1995: 547; Aliyev et al. 2007: 255 (Azerbaijan). Material examined. 7 9, 16 3. Distribution. Caucasus: Azerbaijan, Russia. —, Turkey, Syria, Jordan Israel, Iran, Afghanistan, Central Asia [nominative subspecies]; Southeastern Europe, Russia (Crimea, south of the European part) [ssp. acerbus (Warncke, 1975)]. Lasioglossum ordubadense (Friese, 1916) Published data. Friese 1916: 33; Aliyev et al. 2007: 255 (Azerbaijan). Material examined. 6 9. Distribution. Caucasus: Azerbaijan, Armenia. — Israel, Syria, Turkey, Iraq, Iran (Bytinski-Salz and Ebmer 1974; Ebmer 1995). Lasioglossum pauxillum (Schenck, 1853) Published data. Ebmer 1995: 582 (Azerbaijan). Material examined. 79 2, 69 &. Distribution. Caucasus: Azerbaijan, Armenia, Georgia, Russia. — Europe, North Africa, Israel, Turkey, Russia (east to Western Siberia), Iran, Turkmenistan. Azerbaijani Lasioglossum 873 Lasioglossum pistorium (Vachal, 1902) Published data. No records in Azerbaijan. Material examined. 9 <. Distribution. *Caucasus: Azerbaijan. — Southern Turkmenistan, southern Uzbek- istan, western Iran, northeastern Afghanistan (Bliithgen 1923; Ebmer 1995). Lasioglossum reinigi Ebmer, 1978 Published data. No records in Azerbaijan. Material examined. 1 9, 13 3. Distribution. “Caucasus: Azerbaijan. — Iran (Ebmer 1978, 1995). Lasioglossum skorikovi (Bliithgen, 1929) Published data. Bliithgen 1931: 354, as Halictus samarkandinus (Julfa, Azerbaijan). Material examined. — Distribution. Caucasus: Azerbaijan. — Turkey, Iran, Afghanistan, Turkmenistan, Uzbekistan (Bliithgen 1931; Ebmer 1995). Lasioglossum setulosum (Strand, 1909) Published data. No records in Azerbaijan. Material examined. | 9. Distribution. “Caucasus: Azerbaijan. — Central and Eastern Europe. Lasioglossum sociorum (Bliithgen, 1924) Published data. Bliithgen 1924: 263 (“Araxestal” [Aras River valley in Azerbaijan, Armenia and Iran]). Material examined. 2 9, 3 ¢. Distribution. Caucasus: *Azerbaijan, Armenia. — Cyprus, Turkey, Iran (Ebmer 1995). Species to be excluded from the Azerbaijani Lasioglossum checklist Lasioglossum (Lasioglossum) lebedevi Ebmer, 1972 Published data. Aliyev et al. 2007: 254 (Azerbaijan). Distribution. Southern Kazakhstan. 874 Yulia V. Astafurova et al. / Journal of Hymenoptera Research 97: 849-880 (2024) Remarks. We do not confirm the record of this species from Azerbaijan, the record of this species by Aliyev et al. (2007) is a possible misidentification. Lasioglossum (Lasioglossum) sexmaculatum (Schenck, 1853) Published data. Aliyev et al. 2007: 254 (Azerbaijan). Distribution. Europe (to Poland and Lithuania), Iran. Remarks. We not confirm the record of this species from Azerbaijan, the record of this species by Aliyev et al. (2007) is a possible misidentification. Lasioglossum (Leuchalictus) niveocinctum (Bliithgen, 1923) Published data. Aliyev et al. 2007: 255 (Azerbaijan). Distribution. Russia (North Caucasus, South of the European part), Turkmeni- stan, Tajikistan, Uzbekistan, Kazakhstan, Mongolia, North China. Remarks. We not confirm the record of this species from Azerbaijan, the record of this species by Aliyev et al. (2007) is a possible misidentification. Discussion In total, 101 Lasioglossum species are recorded from Azerbaijan. For comparison, 120 species are known from the whole of the Caucasus (Suppl. material 2). To date, the Lasioglossum fauna of Azerbaijan is the most studied in the Caucasus region. Only 14 species recorded in Azerbaijan are widespread in the whole Palaearctic region: L. albipes, L. calceatum, L. fulvicorne, L. fratellum, L. leucozonium, L. leucopus, L. lucidulum, L. marginatum, L. politum, L. quadrinotatulum, L. rufitarse, L. tungusi- cum, L. villosulum, L. zonulum. Twenty-five species are widespread in West Palaearctic: L. ageratum, L. brevicorne, L. clypeare, L. convexiusculum, L. costulatum, L. elegans, L. euboeense, L. fallax, L. interruptum, L. laeve, L. laticeps, L. lineare, L. malachurum, L. morio, L. nigripes, L. nitidiusculum, L. obscuratum, L. quadrinotatum, L. parvu- lum, L. pauxillum, L. punctatissimum, L. puncticolle, L. semilucens, L. sexnotatum, and L. xanthopus. Six species are distributed in Europe to Caucasus: L. intermedium, L. laevigatum, L. lativentre, L. quadrisignatum, L. setulosum, and L. tarsatum. Fourteen species occur from Mediterranean region or South Europe to Central Asia (or some species to Mongolia and North China): L. aegyptiellum, L. caspicum, L. clypeiferellum, L. discus, L. fallax, L. hilare, L. limbellum, L. longirostre, L. mandibulare, L. mesoscle- rum, L. pygmaeum, L. picipes, L. subaenescens, and L. truncaticolle. More than half of the Lasioglossum fauna of Azerbaijan is formed by species with smaller areal or endemic distributions. Twenty-four species are distributed from southern Europe to the Caucasus, or from the Mediterranean to the Middle East and Azerbaijani Lasioglossum 875 the Caucasus (some species also occur in Iran, Afghanistan and India): L. anellum, L. bicallosum, L. bluethgeni, L. corvinum, L. crassepunctatum, L. cristula, L. epipygiale, L. euxinicum, L. glabriusculum, L. griseolum, L. hethiticum, L. imbecillum, L. kussariense, L. laevidorsum, L. medinai, L. mediterraneum, L. muganicum, L. ordubadense, L. per- egrinum, L. podolicum, L. prunellum, L. stolidum, L. subfasciatum, and L. transitorium. Eleven species have the Caucasus-Central Asian distribution: L. adabaschum, L. ciscapum, L. croceipes, L. equestre, L. euxanthopus, L. hyalinipenne, L. leucopymatum, L. maculipes, L. popovi, L. pastorium, L. skorikovi. Eight species are endemic to Turkey and the Caucasus (some species found in Iran or northern India): L. araxanum, L. acephaloides, L. argaeum, L. edessae, L. korbi, L. reinigi, L. sociorum, and L. talyschense. Thus, the fauna of Azerbaijan is very diverse and consists of species with wide Palaearctic or Western Palaearctic ranges, as well as elements of Mediterranean, European, Central Asian faunas and a small number of endemics. Most species are confined to the steppe zone, polyzonal species are common, but forest and desert species are also found. According to the studied material, Lasioglossum malachurum, L. marginatum, L. politum, and L. glabriusculum are the most common species of Lasioglossum in Azerbaijan. Acknowledgements We are grateful to Jack Neff (Austin, USA), Simone Flaminio (Mons, Belgium), Alain Pauly (Brussels, Belgium) and an anonymous reviewer for valuable comments, which helped to improve the quality of this paper. The research was carried out within the state assignment of Ministry of Science and Higher Education of the Russian Federation (themes No. 122031100272-3 and No. 124012400285-7). References Aliyev KhA, Huseinzade GA, Maharramov MM (2007) Towards the knowledge of the bee fauna of the family Halictidae (Hymenoptera: Apoidea) of Nakhichevan Autonomous Republic of Azerbaijan. Caucasian Entomological Bulletin 3(2): 251-256. [in Russian] https://doi.org/10.23885/1814-3326-2007-3-2-25 1-256 Aliyev KhA, Proshchalykin MYu, Maharramov MM, Huseinzade GA (2017) To the knowl- edge of the genus Andrena Fabricius, 1775 (Hymenoptera: Apoidea: Andrenidae) of Azerbaijan. Caucasian Entomological Bulletin 13(1): 99-109. [in Russian] https://doi. org/10.23885/1814-3326-2017-13-1-99-109 Ascher JS, Pickering J (2024) Discover Life bee species guide and world checklist (Hymenop- tera: Apoidea: Anthophila). http://www.discoverlife.org/mp/20q?guide=Apoidea_species [accessed 15 July 2024] 876 Yulia V. Astafurova et al. / Journal of Hymenoptera Research 97: 849-880 (2024) Astafurova YuV, Proshchalykin MYu (2017) Family Halictidae In: Lelej AS, Proshchalykin MyYu, Loktionov VM (Eds) Annotated Catalogue of the Hymenoptera of Russia. Volume I. Symphyta and Apocrita: Aculeata. Proceedings of the Zoological Institute RAS, Supple- ment 6: 277-292. Astafurova YuV, Proshchalykin MYu (2018) The type specimens of bees (Hymenoptera, Apoidea) deposited in the Zoological Institute of the Russian Academy of Sciences, St. Petersburg. Contribution I. Family Halictidae, genus Lasioglossum Curtis, 1833. Zootaxa 4408(1): 1-66. https://doi.org/10.11646/zootaxa.4408.1.1 Astafurova YuV, Proshchalykin MYu (2023) First record of Lasioglossum adabaschum (Bliith- gen, 1931) (Hymenoptera: Halictidae) from Europe with description of hitherto unknown male. Far Eastern Entomologist 479: 1-6. https://doi.org/10.25221/fee.479. 1 Astafurova YuV, Proshchalykin MYu (2024) Review of the bee genus Lasioglossum Curtis, 1833 (Hymenoptera: Halictidae) fauna of the European South of Russia. Russian Entomological Journal 33(2): 230-242. Bliithgen P (1923) Beitrage zur Kenntnis der Bienengattung Halictus Latr. Archiv fur Naturge- schichte, Abt. A 1923(89/5): 232-332. Bliithgen P (1924) Beitrage zur Systematik der Bienengattung Halictus Latr. (Hym.) [Anm.: Schluss]. — Konowia 3: 253-284. https://doi.org/10.1002/mmnd. 192419240601 Bliithgen P (1925) Beitrage zur Kenntnis der Bienengattung Halictus Latr. I. Archiv Naturge- schihte (A), 90(10): 86-136. Bliithgen P (1929) Neue turkestanische Halictus-Arten (Hym., Apidae). Konowia 8(1): 51-86. https://doi.org/10.1002/mmnd.48019290303 Bliithgen P (1931) Beitrage zur Kenntnis der Bienengattung Halictus Latr. III. Mitteilungen aus dem Zoologischen Museum in Berlin 17(3): 319-398. Bliithgen P (1935) Neue palaarktische Halictus-Arten (Hym., Apidae). [II]. Deutsche Entomol- ogische Zeitschrift 1935(1/2): 111-120. https://doi.org/10.1002/mmnd.193519350106 Boustani M, Rasmont P, Dathe HH, Ghisbain G, Kasparek M, Michez D, Miiller A, Pauly A, Risch S, Straka J, Terzo M, Van Achter X, Wood TJ, Nemer N (2021) The bees of Lebanon (Hymenoptera: Apoidea: Anthophila). Zootaxa 4976(1): 1-146. https://doi. org/10.11646/zootaxa.4976.1.1 Bytinski-Salz H, Ebmer AW (1974) The Halictidae of Israel (Hymenoptera, Apoidea) I. Genus Lasioglossum. \srael Journal of Entomology 9: 174—217. https://digitalcommons.usu.edu/ bee_lab_du/44 Curtis J (1833) British Entomology: Being illustrations and descriptions of the genera of In- sects found in Great Britain and Ireland. Vol. 10. Printed for the author, London, 47 pp. [pp. 434-48 1] Ebmer AW (1970) Die Bienen des Genus Hadlictus Latr. s.l. im Grofraum von Linz (Hymenop- tera, Apidae) Teil 2. Naturkundliches Jahrbuch der Stadt Linz 16: 19-82. Ebmer AW (1972) Neue westpalaarktische Halictidae (Halictidae, Apoidea). Mitteilungen aus dem Zoologischen Museum in Berlin 48(2): 225-263. https://doi.org/10.1002/ mmnz.19720480202 Ebmer AW (1974) Die Halictidae Makedoniens. Acta Musei Macedonici Scientiarum Natu- ralium 14: 45-66. Azerbaijani Lasioglossum 877 Ebmer AW (1976) Halictus und Lasioglossum aus Marokko. Linzer biologische Beitrage 8(1): 205-266. Ebmer AW (1978) Halictus, Lasioglossum, Rophites und Systropha aus dem Iran (Halicti- dae, Apoidea) sowie neue Arten aus der Palaarktis. Linzer Biologische Beitrage 10(1): 1-109. Ebmer AW (1980) Asiatische Halictidae (Apoidea, Hymenoptera). Linzer biologische Beitrage 12(2): 469-506. Ebmer AW (1981) Halictus und Lasioglossum aus Kreta (Halictidae, Apoidea). Linzer Biologis- che Beitrage 13(1): 101-127. Ebmer AW (1982) Zur Bienenfaund der Mongolei die Arten der Gattungen Halictus Latr. und Lasioglossum Curt. (Hymenoptera: Halictidae) ergebnisse der mongolisch-deutschen biologischen Expedition set 1962, nr. 108. Mitteilungen aus dem Zoologischen Museum in Berlin 58(2): 199-227. https://doi.org/10.1002/mmnz.4830580202 Ebmer AW (1985) Halictus und Lasioglossum aus Marokko (Hymenoptera, Apoidea, Halctidae) Erster Nachtrag. Linzer biologische Beitrage 17(2): 271-293. Ebmer AW (1986) Die Artgruppe des Lasioglossum strictifrons (Vachal 1895) mit einer Bestim- mungstabelle der Weibchen (Hymenoptera, Apoidea, Halictidae). Linzer biologische Be- itrige 18(2): 417-443. Ebmer AW (1988) Kritische Liste der nicht-parasitischen Halictidae Osterreichs mit Beriick- sichtigung aller mitteleuropaischen Arten (Insecta: Hymenoptera: Apoidea: Halictidae). Linzer biologische Beitrage 20(2): 527-711. Ebmer AW (1995) Asiatische Halictidae, 3. Die Artengruppe de Lasioglossum carinate-Evylaeus. Linzer biologische Beitrage 27(2): 525-652. Ebmer AW (1997) Asiatische Halictidae, 6. Lasioglossum carinaless-Evylaeus: Erganzungen zu den Artengruppen von L. nitidiusculum and L. punctatissimum s. |., sowie die Artengruppe des L. marginellum (Insecta: Hymenoptera: Apoidea: Halictidae: Halictinae). Linzer biolo- gische Beitrage 29(2): 921-982. Ebmer AW (1998) Asiatische Halictidae - 7. Neue Lasioglossum-Arten mit einer Ubersicht der Lasioglossum s. str.-Arten der nepalischen und yunnanischen Subregion, sowie des nérdli- chen Zentral-China (Insecta: Hymenoptera: Apoidea: Halictidae: Halictinae). Linzer biologische Beitrage 30(1): 365-430. Ebmer AW (2000) Asiatische Halictidae, 9. Die Artengruppe des Lasioglossum pauperatum (In- secta: Hymenoptera: Apoidea: Halictidae: Halictinae). Linzer biologische Beitrage 32(2): 399-453. Ebmer AW (2011) Holarktische Bienenarten — autochthon, eingeftihrt, eingeschleppt. Linzer biologische Beitrage 43(1): 5-83. Ebmer AW (2014) Die nicht-parasitischen Halictidae der Insel Zypern im Vergleich zu Kreta mit einer Monographie der Lasioglossum bimaculatum-Artengruppe und einer Ubersicht der Halictus nicosiae-Untergruppe (Insecta: Hymenoptera: Apoidea: Halictidae). Linzer biologische Beitrage 46(1): 291-413. Ebmer AW, Sakagami SF (1985) Taxonomic notes on the palearctic species of the Lasioglossum nitidiusculum group, with description of Lasioglossum allodalum, new species (Hymenoptera, Halictidae). Kontyti 53(2): 297-310. 878 Yulia V. Astafurova et al. / Journal of Hymenoptera Research 97: 849-880 (2024) Fateryga AV, Proshchalykin MYu, Maharramov MM (2020) Bees of the tribe Anthidiini (Hymenoptera, Megachilidae) of Nakhchivan Autonomous Republic of Azerbaijan. Entomological Review 100(3): 323-336. https://doi.org/10.1134/S0013873820030069 Friese H (1916) Die Formen des Halictus quadricinctus F., sowie einige neue Halictus-Arten der palaarktischen Region (Hym.). Deutsche Entomologische Zeitschrift 1916: 25-34. https://doi.org/10.1002/mmnd.48019160105 Ghisbain G, Rosa P, Bogusch P, Flaminio S, Le Divelec R, Dorchin A, Kasparek M, Kuhlmann M, Litman J, Mignot M, Miiller A, Praz C, Radchenko VG, Rasmont P, Risch S, Roberts SPM, Smit J, Wood TJ, Michez D, Reverté S (2023) The new annotated checklist of the wild bees of Europe (Hymenoptera: Anthophila). Zootaxa 5327(1): 1-147. https://doi. org/10.11646/zootaxa.5327.1.1 Gibbs J, Packer L, Dumesh S, Danforth BN (2013) Revision and reclassification of Lasioglossum (Evylaeus), L. (Hemihalictus) and L. (Sphecodogastra) in eastern North America (Hymenoptera: Apoidea: Halictidae). Zootaxa 3672(1): 1-117. https://doi.org/10.11646/zootaxa.3672.1.1 Kokujev NR (1913) New species of Hymenoptera from Caucasus, collected by A.B. Schelko- vnikov. Izvestiya Kavkazskogo Muzeya (Tiflis) 7: 1-6. [in Russian] Kuhlmann M, Proshchalykin MYu (2016) The bees of the genus Colletes Latreille (Hyme- noptera: Colletidae) of the Caucasus region. Zootaxa 4161(3): 367-385. https://doi. org/10.11646/zootaxa.4161.3.5 Lelej AS, Proshchalykin MYu, Maharramov MM (2022) A review of the Mutillidae (Hymenop- tera) of Azerbaijan. Zootaxa 5155(1): 61-86. https://doi.org/10.11646/zootaxa.5155.1.3 Maharramov MM, Fateryga AV, Proshchalykin MYu (2021) Megachilid bees (Hymenop- tera: Megachilidae) of the Nakhchivan Autonomous Republic of Azerbaijan: tribes Li- thurgini, Dioxyini, and Megachilini. Far Eastern Entomologist 428: 12-24. https://doi. org/10.25221/fee.428.3 Maharramov MM, Fateryga AV, Proshchalykin MYu (2023) New records of megachilid bees (Hymenoptera: Megachilidae) from the Nakhchivan Autonomous Republic of Azerbaijan. Far Eastern Entomologist 472: 18-24. https://doi.org/10.25221/fee.472.2 Michener CD (2007) The Bees of the World (2"¢ edn). Johns Hopkins University Press, Balti- more, 953 pp. [+ 20 pls] Morawitz F (1873) Die Bienen Daghestans. Horae Societatis Entomologicae Rossicae 10(2/4): 129-189. Morawitz F (1876) A Travel to Turkestan by the Member-Founder of the Society A. P. Fedtschen- ko, accomplished from the Imperial Society of Naturalists, Anthropologists, and Ethnog- raphists on a Commission from the General-Governor of Turkestan K. P. von Kaufmann (Issue 9). Vol. II. Zoogeographical Investigations. Pt. V. (Division 7). Bees (Mellifera). Pt. 2 [Andrenidae]. Izvestiya Imperatorskogo Obshchestva Lyubiteley Estestvoznaniya. Anthro- pologii i Ethnografii 21(3): 161-303. [in Russian] Morawitz F (1877) Nachtrag zur Bienenfauna Caucasiens. Horae Societatis Entomologicae Rossicae 14(1): 3-112. Murao R, Tadauchi O, Miyanaga R (2017) The bee family Halictidae (Hymenoptera, Apoidea) from Central Asia collected by the Kyushu and Shimane Universities expeditions. Biodiversity Data Journal 5: 1-43. Azerbaijani Lasioglossum 879 Niu Z-Q, Zhang D, Zhu C-D (2020) Extraordinary bees of the genus Lasioglossum Cuttis, 1833 (Hymenoptera: Apoidea: Halictidae) from China. Zoological Systematics 45(1): 50-58. https://doi.org/10.11865/zs.202005 Pauly A (2016) Le genre Lasioglossum, sous-genre Evylaeus Robertson, 1902, de la Region Paléarctique. Atlas Hymenoptera. http://www.atlashymenoptera.net/page.aspx??ID=95 [accessed 15 July 2024] Pesenko YuA (1986) An annotated key to the Palaearctic species of bees of the genus Lasioglossum sensu stricto (Hymenoptera, Halictidae) for females, with descriptions of new subgenera and species. rudy Zoologicheskogo Instituta Akademii Nauk SSSR 159: 113-151. [in Russian] Pesenko YuA (2006) Contributions to the halictid fauna of the Eastern Palaearctic Region: genus Lasioglossum Curtis (Hymenoptera: Halictidae, Halictinae). Zoosystematica Rossica 15(1): 133-166. https://doi.org/10.31610/zsr/2006.15.1.133 Pesenko YuA (2007) Subgeneric classification of the Palaearctic bees of the genus Evylaeus Rob- ertson (Hymenoptera: Halictidae). Zootaxa 1500(1): 1-54. https://doi.org/10.11646/ ZOOTAXA.1500.1.1 Pesenko YuA, Banaszak J, Radchenko VG, Cierzniak T (2000) Bees of the family Halictidae (excluding Sphecodes) of Poland: taxonomy, ecology, bionomics. Pedagogical University, Bydgoszcz, 348 pp. Proshchalykin MYu, Maharramov MM (2020) Additional records of osmiine bees (Hyme- noptera: Megachilidae: Osmiini) from Azerbaijan. Acta Biologica Sibirica 6: 33-42. https://doi.org/10.3897/abs.6.e53095 Proshchalykin MYu, Maharramov MM, Aliyev KhA (2019) New data on the tribe Osmiini (Hymenoptera: Megachilidae) from Azerbaijan. Far Eastern Entomologist 383: 12-20. https://doi.org/10.25221/fee.383.3 Proshchalykin MYu, Fateryga AV, Astafurova YuV (2023) Corrections and additions to the catalogue of the bees (Hymenoptera, Anthophila) of Russia. ZooKeys 1187: 301-339. https://doi.org/10.3897/zookeys.1187.113240 Sill6 N (2024) Wiederfund der Schmalbiene Lasioglossum corvinum (Morawitz, 1877) in Deutschland und Erstfund ftir Siidwest-deutschland (Hymenoptera: Halictidae). An- thophila 1: 1-9. Skhirtladze IA (1981) The Bees of the Transcaucasus (Hymenoptera, Apoidea). Metsniereba, Tbilisi, 148 pp. [in Russian] Warncke K (1975) Beitrage zur systematik und Verbreitung der Furchenbienen in der Tuirkei (Hymenoptera, Apoidea, Halictus). Polskie Pismo Entomologiczne 45: 81-123. Warncke K (1982) Beitrag zur Bienenfauna des Iran. — 14. Die Gattung Halictus Latr., mit Bemerkungen tiber unbekannte und neue Halictus-Arten in der Westpalaarktis und Zentralasien. Bollettino del Museo Civico di Storia Naturale di Venezia 32: 67-166. Warncke K (1984) Erganzungen zur Verbreitung der Bienengattung Halictus Latr. in der Tirkei (Hymenoptera, Apidae). Linzer biologische Beitrage 16(2): 277-318. Zhang D, Niu Z-Q, Luo A-R, Orr MC, Ferrari RR, Jin J-K Wu Q-T, Zhang EF Zhu C-D (2022) Testing the systematic status of Homalictus and Rostrohalictus with weakened cross- vein groups within Halictini (Hymenoptera: Halictidae) using low-coverage whole-genome sequencing. Insect Science 29: 1819-1833. https://doi.org/10.1111/1744-7917.13034 880 Yulia V. Astafurova et al. / Journal of Hymenoptera Research 97: 849-880 (2024) Supplementary material | List of Azerbaijani Lasioglossum species with labeling data Authors: Yulia V. Astafurova, Mahir M. Maharramov, Maxim Yu. Proshchalykin Data type: docx Explanation note: List of all 2150 examined specimens of the Lasioglossum bees from Azerbaijan. Copyright notice: This dataset is made available under the Open Database License (http://opendatacommons.org/licenses/odbl/1.0/). The Open Database License (ODDbL) is a license agreement intended to allow users to freely share, modify, and use this Dataset while maintaining this same freedom for others, provided that the original source and author(s) are credited. Link: https://doi.org/10.3897/jhr.97.135381.suppl1 Supplementary material 2 List of Lasioglossum bees recorded from the Caucasus region Authors: Yulia V. Astafurova, Mahir M. Maharramov, Maxim Yu. Proshchalykin Data type: docx Explanation note: List of 120 species of bees of the genus Lasioglossum recorded in the Caucasus region, with distribution by countries and subregions. Copyright notice: This dataset is made available under the Open Database License (http://opendatacommons.org/licenses/odbl/1.0/). The Open Database License (ODDbL) is a license agreement intended to allow users to freely share, modify, and use this Dataset while maintaining this same freedom for others, provided that the original source and author(s) are credited. Link: https://doi.org/10.3897/jhr.97.135381.suppl2