Lasioglossum (Lasioglossum) costulatum (Kriechbaumer, 1873)

Halictus costulatus Kriechbaumer, 1873: 59, ♀, ♂. Lectotype: ♀, Germany: Rosenheim; designated by Ebmer (1976b: 4); ZSM.

Published data. Pesenko 1986: 137 (Caucasus); Chenikalova 2005: 26 (Stavropol Territory).

Material examined. RUSSIA. Krasnodar Territory: 1 ♀, Gelendzhik, 1.VIII.1908, N. Vorobyev; Adygei Republic: 1 ♀, 1 ♂, Maykop, V.1902, G. Shaposhnikov; 1 ♂, Shuntuk, Maykop, 25.VII.1938, Andreeva; 1 ♀, 55 km S of Maykop, Belaya River, 550 m, meadow, forest, 7.VIII.1990, YP; Ingush Republic: 1 ♂, Salgi, 6.VII.1927, Kirichenko; Kabardino-Balkarian Republic: 1 ♀, Nizhniy Chegem, 1263 m, 3. VI.2009, NV; Chechen Republic: 1 ♀, 2 ♂, Borzoy, 10 km SW of Shatoy, 900 m, meadow, 23.VII.1990, YP; Dagestan Republic: 1 ♀, 3 km NNW of Maydanskoye, 42°37′N 46°56′E, 2. VI.2019, MP, VL; 1 ♀, Tsudakhar, 42°20′N 47°10′E, 15, 18. VI.2023, MP .

Distribution. Russia (North Caucasus, as far east to Eastern Siberia); Europe, North Africa, Lebanon, Turkey, Caucasus, Syria, Iran, Central Asia.

Remarks. In North Caucasus, this species occurs in forest landscape.