57. O. nuchicornis (Linnaeus, 1758)

Lentz 1879; Bercio & Folwaczny 1979; Alekseev & Sakhnov 2000.

Voucher specimens: 16 [Rybachii, 10 August 1997, 3 exp.; ibidem, 26 July 2008, 2 exp.; Mezhdurech’e, 13 June 2000, 2 exp.; Pionerskiy, June 2000, 2 exp.; 1 km E Cherniakhovsk, 07 June 1997; ibidem, 29 May 2007; Yantarny 09 May 2008; ibidem, 21 May 2018; Baltiysk, 25 May 2008, 2 exp.; Vzmor’e, 11 September 2018].

Kaliningrad Region: Gur. (Königsberg, Wilkie), Zel. (Neuhäuser, Rauschen, Rossitten, Tenkitten); Chern., Gvard., Krasn., Zel.

Comments: The most common species of the genus, widely distributed and occasional in the Kaliningrad Region, in cattle excrements on the pastures and forest edges.