Omaloplia nigromarginata, (Herbst, 1785)

Alekseev, Vitalii I., 2018, Scarabaeoidea (Insecta: Coleoptera) Of The Kaliningrad Region (Russia): The Commented Actual Checklist, Assessment Of Rarity And Notes To Regional Protection, Acta Biologica Universitatis Daugavpiliensis 18 (2), pp. 111-152 : 136

62. O. nigromarginata (Herbst, 1785)

Lentz 1879 ( Homaloplia ruricola ); Bercio & Folwaczny 1979 ( Homaloplia ruricola ); Alekseev & Sakhnov 2000 ( Homaloplia ruricola ).

Voucher specimens: 7 [1 km E Cherniakhovsk, 28 June 1999, 3 exp.; ibidem, 21 May 2005; ibidem, 06 July 2010; 2 km E Ladushkin, 27 June 2010; Yantarny, 12 July 2015].

Kaliningrad Region: Chern. (Insterburg), Gur. (Arnau, Königsberg, Neuhausen), Zel. (Loppöhnen, Palmnicken, Rauschen, Warnicken); Bagr., Chern., Zel.

Comments: According to morphological characters and distributional maps of O. ruricola and O. nigromarginata in Rössner (1995), the specimens from the Kaliningrad Region belong to O. nigromarginata and all abovementioned reports from the northern Eastern Prussia and the Kaliningrad Region should concern the distributed in northern and eastern Europe O. nigromarginata only. The beetle occasionally and sporadically occurs in the Kaliningrad Region on the sun exposed meadows.