Hylecthrus rubi Saunders 1850

Hylecthrus rubi Saunders, 1850 Fig 2 MATERIAL EXAMINED. Russia: Lipetsk Oblast, Zadonsk Dist., 40 km E of the vill. Donskoye, Galichya Gora Nature Reserve, Morozova Gora, 52.600240°N, 38.925229°E, 28.VIII 2019, O.N. Berezhnova leg. – 1♂ of Hylaeus (Lambdopsis) annularis (Kirby, 1802) (K.S. Ivlev det. (it was compared by copies, rechecked by A. Z. Osychnyuk)) stylopized by 1♀ of Hylecthrus rubi (between IV and V tergites) (A.M. Ostrovsky det.). DISTRIBUTION. Widely distributed in Europe and extending to the Middle East, currently known from Albania, Austria, Bulgaria, Croatia, France, Germany, Great Britain, Greece, Hungary, Israel, Italy, Romania, Sicily, Slovakia, Slovenia, Spain, Switzerland, Turkey, Ukraine, Russia, Belarus (Pohl, 2010; Cook, 2019; Ostrovsky, 2019). REMARKS. Hylecthrus rubi is a typical parasite of many Hylaeus (Hymenoptera: Colletidae) species (Medvedev, 1965; Kinzelbach, 1971 b). However, from Russia only Hylaeus annularis has been recorded as its host. In European Russia H. annularis is a widespread and common species.