Hydraena (s.str.) gracilis Germar, 1824

Recently recorded from ST by Litovkin (2012a).

Russia (ST): Orenburg Oblast’, Orenburg Nature Reserve, NE of Kuskol’ Lakes, 3 May 2011, leg. P. Petrov, 1 ex. (APC) .

ST should be added to the Catalogue of Palaearctic Coleoptera .