Lasioglossum (Hemihalictus) mesosclerum (Pérez, 1903)

Halictus mesosclerus Pérez, 1903: CCXIX, ♀. Lectotype: ♀, France: Royan; designated by Ebmer (1972a: 618); MNP.

Published data. Blüthgen 1931: 319 (Krasnodar Territory).

Material examined. RUSSIA. Krasnodar Territory: 1 ♂, Taman, 19.IX.2007, A. Khalaim; Adygei Republic: 1 ♂, Maykop, 1930, Pogodina; Chechen Republic: 1 ♀, Starogladkovskaya, 8.VII.1927, Kirichenko; Dagestan Republic: 5 ♀, Samur Reserve, 41°86′N 48°55′E, 5-7.VI.2017, MM; 3 ♀, 8 km SE of Staroterechnoye, 43.792°N, 47.527°E, 19. VI.2018, MP, VL, MM; 1 ♀, 3 km SW of Novoterechnoye, 43.99°N, 47.32°E, 20. VI.2018, YA; 1 ♀, Kumtorkala, near Barkhan Sarykum, 43°002′N 47°237′E, 29.V.2019, MM; 1 ♀, Tsudakhar, 42°20′N 47°10′E, 15, 18. VI.2023, MP .

Distribution. Russia (North Caucasus, south of the European part); southern and central Europe, North Africa, Syria, Jordan, Israel, Lebanon, Turkey, Caucasus, Iran, Afghanistan, Central Asia.

Remarks. In steppe and desert/semi-desert landscapes.