77. P. metallica metallica (Herbst, 1782)
Bercio & Folwaczny 1979 ( Potosia cuprea F. ssp. metallica Hbst.); Alekseev & Sakhnov 2000 ( Potosia); Alekseev 2006 ( Potosia); Alekseev 2014 ( Potosia cuprea metallica).
Voucher specimens: 4 [Svetlogorsk, 20 June 1990, 2 exp.; Krasnoles’e, 08 June 2008; Medovoe, 10 April – 03 July 2018].
Kaliningrad Region: Numerous reports; Bagr., Chern., Gur., Nest., Pol., Zel.
Comments: The larvae develop in the nest mounds of the ant genus Formica, adult beetles occur on flowers in June-July. The species is widely distributed and occasional throughout the Kaliningrad Region: it occurs mostly in pine forest edges and along roads in forested areas.