Hylaeus (Hylaeus) kotschisus (WARNCKE, 1981) Prosopis nigrita kotschisa WARNCKE, 1981: 174, . Turkey: Şereflikoçhisar. Prosopis (Prosopis) nigrita kotschisa WARNCKE, 1981 – WARNCKE 1992: 763. Hylaeus (Hylaeus) kotschisus (WARNCKE, 1981) – DATHE 1980: 92. Material examined: Adıyaman: Kahda, Nemrut Dağı, 2100 m, 11.07.1990, 3 , leg. A.W. Ebmer. Ağrı: Hamur, 1650 m, 26.07.2003, 2 , , leg. H. Özbek. Artvin: Yusufeli, 850 m, 27.07.2004, 3 , leg. S. Çoruh; Demirkent, Salekör, 1650 m, 01.09.1995, , leg. M. Kraus; Aksaray: Ihlara, 38.14N 34.18E, 18.07.1998, , leg. C. Schmid-Egger. Bitlis: Ahlat, 1750 m, 15.08.1985, 3 , leg. R. Hensen. Erzurum: Ilıca, Eşkinkaya, 20.07.2003, , leg. H. Özbek; Tortum, Derekapı, 20.09.2000, , leg. H. Özbek (on Melilotus alba); Uzundere, Denizbaşı, 4 , leg. H. Özbek (on Daucus carota); Hakkâri; 1750 m, 09.07.1987, 3 , 2 , leg. R. Hensen; Yüksekova, 30 km W, 1850 m, 19.07.1986, , leg. A.W. Ebmer; Varagöz, 37°25N 44°13E, 1650 m, 02.08.1986,2 , 2,leg. S.M. B lank; Sat Dağı, 1700 m, 37°25N 44°13E, 04.08.1983, , leg. M. Schwarz (coll. Schwarz / Ansfelden). Kars: Sarıkamış, Karakurt, TCK Çeşmesi, 1501 m, 40°08N 42°21E, 14.08.2007, 6 , leg. H. Özbek (on Eryngium campestre). Kayseri: Pınarbaşı, 1500 m, 25.06.1987, , leg. R. Hensen. Mersin: Silifke, Köselerli, 36°33N 33°27E, 19.07.1988, , leg. C. Schmid-Egger. Nevşehir: 2 km S, 1250 m, 04.07.1984, , leg, A.W. Ebmer; Avanos, Zelve, 1050 m, 18.07.1984, , leg. A.W. Ebmer. Ürgüp, 1200 m, 24.06.1987, leg. R. Hensen; 1100, 11.08.1987, 2 , leg. P. van Ojen. Niğde: Çiftehan, Bolkardağları, 1700–1800 m, 17.07.1990, 2 , leg. A.W. Ebmer. Sivas: Gürün, Şuğul Vadisi, 1400 m, 31.07.1987, , 2 , leg. A.W. Ebmer. Tunceli: Ovacık 17 km W, 1250 m, 18.08.1985, 2 , 4 , leg. R. Hensen. Van: Adilcevaz, 1800 m, 11.07.1984, , leg. A.W. Ebmer. Başkale, Güzeldere Geçidi, 2100 m, 12.07.1984, , leg. A.W. Ebmer. Remarks: The provinces Adıyaman, Ağrı, Artvin, Aksaray, Bitlis, Kayseri, Nevşehir, Niğde, Sivas, Tunceli and Van are to be added to the distribution list of H. kotschisus. The species has also been reported from Ankara, but it is mainly found in the eastern parts of Turkey. Ankara is currently the most western distribution point of this species. It can be considered as an inhabitant of warm, dry, steppe-like areas as well as a mountain species. H. kotschisus is frequently recorded in Turkey (18 provinces). Distribution: Eastern Mediterranean species (Lebanon, Iran, Israel, Turkey). In Turkey: Ankara, Erzurum, Hakkâri, Kars, Kırıkkale, Konya, Tokat (WARNCKE 1981); Adıyaman, Ağrı, Artvin, Aksaray, Bitlis, Kayseri, Nevşehir, Niğde, Sivas, Tunceli, Van.

Published as part of Özbek, Hikmet & Dathe, Holger H., 2020, The bees of the genus Hylaeus FABRICIUS, 1793 of Turkey, with keys to the subgenera and species (Hymenoptera: Anthophila, Colletidae), pp. 273-346 in Beiträge Zur Entomologie = Contributions to Entomology 70 (2) on page 306, DOI: 10.21248/contrib.entomol.70.2.273-346, http://zenodo.org/record/5742898