Lasioglossum (Hemihalictus) pygmaeum (Schenck, 1853)
Hylaeus pygmaeus Schenck, 1853: 165, ♂. Syntype: 1 ♂, Germany: Wiesbaden; MWG.
Published data. No records in North Caucasus.
Material examined. RUSSIA. Krasnodar Territory: 1 ♀, Lazarevskoye, 29.VII.1952, VR; 1 ♀, between Novorossiyks and Abrau, 4.VII.2001, K. Tomkovich; 1 ♀, Gelendzhik, Dzhankhot, pine forest, 10. VI.2017, AF; Stavropol Territory: 2♀, Kislovodsk, 1, 10. V.1949,VP; 1♀,Shpakovskoye, 27.VII.1989, SB; 1♀, Novozavedennoye, near Kuma River, 3. VI.2010,NV; Adygei Republic: 1 ♀, 47 km S of Khadzokh, Guzeripl, 26. VI.1976, ES; Kabardino-Balkarian Republic: 1 ♀, 5 km N of Baksan, 500 m, steppe, 31.VII.1990, YP; Dagestan Republic: 1 ♀, Botlikh, near Tlokh, 11. V.1988, Guseynzade; 1 ♀, 3 km SW of Novoterechnoye, 43.99°N, 47.32°E, 20. VI.2018, MP, VL; 1 ♀, near Barkhan Sarykum, 43°01′N 43°23′E, 31. V.2019, MM; 2 ♀, 5 km SSW of Rubas, 41°52′N 48°16′E, 2. VI.2019, MP, VL; 1 ♀, Tsudakhar, 28. V.2022, AF; 2 ♀, idem, 42°20′N 47°10′E, 16. VI.2023, MP; 1 ♀, Kamyshchay River valley, 41°54′N 48°13′E, 30. V.2022, AF; 5 ♀, near Gubden, 42°34′N 47°33′E, 14. VI.2023, MP .
Distribution. Russia (Crimea, *North Caucasus, south of the European part [ ssp. patulum (Vachal, 1905)]; North Africa, southern and locally Central Europe [nominate subspecies]; southeastern Europe, Caucasus, Turkey, Syria, Jordan, Lebanon, Iran, Afghanistan, Pakistan, Central Asia [ ssp. patulum (Vachal, 1905)].
Remarks. Mostly in steppe landscapes.