Stylops thwaitesi Perkins 1918

Stylops thwaitesi Perkins, 1918 Fig. 7 MATERIAL EXAMINED. Russia: Lipetsk Oblast, Volovsky Dist., 70 km SE of Livny, vill. Naberezhnoye, 51.985368°N, 38.117629°E, roadside, 10.VI 1981, V. T. Kuznetsova leg. – 1♀ of Andrena (Taeniandrena) gelriae van der Vecht, 1927 (V. T. Kuznetsova det.) stylopized by 1♀ of Stylops thwaitesi (between IV and V tergites) (A.M. Ostrovsky det.). DISTRIBUTION. Currently known from Great Britain (type locality), Austria, Finland, France, Germany, Hungary, Italy, Netherlands, Portugal, Ukraine, Russia, Belarus, Spain, Switzerland, former Yugoslavia (Cook, 2019; Smit et al., 2020; Ostrovsky, 2021a, b). REMARKS. Stylops thwaitesi is a typical parasite of many Andrena (Taeniandrena) species (Hymenoptera: Andrenidae) (Straka et al., 2015; Cook, 2019; Smit et al., 2020). However, A. (T.) gelriae is new host of S. thwaitesi. In European Russia A. (T.) gelriae is a common species.