The bees of the genus Hylaeus FABRICIUS, 1793 of Turkey, with keys to the subgenera and species (Hymenoptera: Anthophila, Colletidae) Author Özbek, Hikmet Author Dathe, Holger H. text Beiträge Zur Entomologie = Contributions to Entomology 2020 2020-12-01 70 2 273 346 journal article 10.21248/contrib.entomol.70.2.273-346 0005-805X 5742898 Hylaeus ( Dentigera ) gredleri FÖRSTER, 1871 Hylaeus gredleri FÖRSTER, 1871: 944–946 , . Austria : Telfs/ Tirol . Hylaeus (Dentigera) gredleri FÖRSTER, 1871 . – ALIEV 1986: 264 . DATHE et al. 2016: 17, 45. Material examined: Ağrı : 10 km S, 1650 m , 26.07.2003 , 6 , leg. H. Özbek; Cumaçay 1930 m , 23.07.1996 , , leg. P. Rasmont (on Cirsium arvense vestitum ); Hamur, 26.07.2003 , 2 , leg. H. Özbek. Erzurum : 5 km SW, 27.07.2010 , , leg. J. Ascher, H. Özbek; Atatürk University Campus, 2000 m , 11,07.2007, , leg. leg. Ros. Asch Özb, 18.08.1970 , , leg. H. Özbek; Oltu, Başaklı, 1500 m , 20 km WSW of Oltu, 29°14N 41°48E , 03.07.2001 , , 4 , leg. J.G. Rozen & H. Özbek (coll. AMNH ); Başaklı, Karadağ, 2100 m , 24.07.2005 , 2 , H. Özbek (on Eryngium creticum ); Çamlıbel, 1750 m , 40.28.22N 41.46.35E, 11.07.2004 , 3 , leg. H. Özbek; Pasinler, 5 km W of Pasinler, 10.07.2007 , , leg. Ros. Asch Özbek (coll. AMNH ). Hakkâri : Yüksekova, Esendere, 21.07.1998 , , leg. C. Schmid-Egger. İzmir : Efes, 18.05.1992 , 3 , 3 , leg. W.H. Liebig. Kars : Sarıkamış, Akkurt çeşmesi, 1550 m , 19.06.2004 , , , leg. H. Özbek; Karakurt, 1501 m , 40°08N 42°21E , 05.08.2002 , 3 , leg. H. Özbek (on Achillea millefolium L.). Kırşehir : Kulpak, 38°27N 34°14E , , 28.05.2001 , , 02.06.2002 , leg. W.H. Liebig. Konya : 25 km N, 11.06.1966 , 2 , leg. HHF Hamann; Beyşehir, 13.06.1966 , ; Dedegöl Dağı, 1400–1700 m , 15.06.1966 , , leg. HHF Hamann. Kahramanmaraş : Göksun, 1400 m , 26.06.1987 , 4 , leg. R . Hensen. Mersin : Mut 10 km S, 08.06.1966 , , leg. HHF Hamann. Nevşehir : Avanos, 38°46N 34°54E , 25.05.2001 , , leg. W.H. Liebig; Göreme, 1000 m , 09.07.1988 , 3 , , leg. C. Schmid-Egger. Niğde : Yeniköy, 1370 m , 07.07.1995 , , leg. Y. Barbier (on Euphorbia altissima ); Karakışlakcı, 1240 m , 07.07.1995 , 5 , 10 , leg. D. Flagothier, Y. Barbier (on Astrodaucus orientalis, Tortilis uranica ). Remarks: The available records suggest that H. gredleri occurs mainly in Eastern and Central Anatolia . It preferentially inhabits steppes, open shrubby habitats and forest margins from sea level to altitudes of 2000 m . The flight season extends from the end of May to the end of August, with a peak in June. Flowers visited: Achillea millefolium , Astrodaucus orientalis , Euphorbia altissima , Eryngium creticum , Tortilis uranica . The species is moderately recorded in Turkey (11 provinces). Distribution: All Europe south to Sicily, up to 1500 m , Russia , and from western Morocco , Lebanon and Azerbaijan to Kazakhstan . Turkey : 11 provinces; older data are not usable as the species was previously mixed with H. brevicornis .