Cercyon obsoletus, (GYLLENHAL, 1808)

Alekseev, Vitaly I. & Bukejs, Andris, 2011, Contributions to the knowledge of beetles (Insecta: Coleoptera) in the Kaliningrad region. 2, Baltic Journal of Coleopterology 11 (2), pp. 209-231 : 211-212

6. CERCYON OBSOLETUS (GYLLENHAL, 1808)

Examined material: Recorded twice: Zelenogradsk district, Melnikovo vicinity [3 km NW Ryabinovka], 54°87´66´´N 20°46´51.8´´E, 30.IV.1997 (1 ex., pasture, cattle excrements, leg. V. Alekseev); Gur’evsk district , Otvazhnoe vicinity [4 km S Kaliningrad], 54°61´49.8´´N 20°55´95.5´´E, 16.IV.2002 (2 exx, pasture, cow excrements, leg. V. Alekseev) .

Comments: Cercyon obsoletus s.str. is known from southern ( Bulgaria) and western Europe ( Vorst 2009). According to Silfverberg (2004) the species is wide distributed in all Fennoscandian and Baltic territories, but possibly this data concerned to C. castanipennis . The matherials collected before 1945 from the region are not available and it is impossible to known which species ( C. obsoletus s.str. or C. castanipennis or both taxa) was sampled in the past and reported under the name “ C. lugubris Oliv. ” ( Bercio & Folwaczny 1979) from Cranz [Zelenogradsk], Loppöhnen [Rybnoe], Königsberg [Kaliningrad] and Insterburg [Chernyakhovsk]. The data about the species from monograph dealing with water beetles (Alekseev 2010) heerwith is defined and confirmed.

LEIODIDAE FLEMING, 1821