Reference
Juan A. Delgado, Manfred A. Jäch (2009): Revision of the Palearctic species of the genus Ochthebius Leach XXVII. Revisional notes on the O. (s.str.) foveolatus subgroup (Coleoptera: Hydraenidae). – Koleopterologische Rundschau – 79_2009: 39 - 57.