Hydrochus ignicollis Motschulsky, 1860

Alekseev, Vitalii I., Drotikova, Anna M., Rozhina, Viktoria I. & Bukejs, Andris, 2021, Addenda To The Knowledge Of Beetles (Insecta: Сoleoptera) Of Kaliningrad Region (Western Russia): New Faunistic Records, Acta Biologica Universitatis Daugavpiliensis 21 (1), pp. 13-31 : 18

*5. Hydrochus ignicollis Motschulsky, 1860

Local references: Not reported earlier.

Material: Baltiisk district , Mechnikovo vicinity, 54.67°N, 19.91°E, 16.06.2021, 1 ex., sandy coast of the Baltic Sea .

Comments: Hydrochus ignicollis has been known as synonym of Hydrochus elongatus (Schaller, 1783) for a long time and this species was absent in the lists of beetles of Kaliningrad region (e.g. in Alekseev 2010a) or of the former East Prussia [Bercio & Folwaczny 1979). This is the first formal report of the species from Kaliningrad region. The species is probably native species with unknown distribution in Kaliningrad region.