Addenda To The Knowledge Of Beetles (Insecta: Сoleoptera) Of Kaliningrad Region (Western Russia): New Faunistic Records Author Alekseev, Vitalii I. Author Drotikova, Anna M. Author Rozhina, Viktoria I. Author Bukejs, Andris text Acta Biologica Universitatis Daugavpiliensis 2021 21 1 13 31 journal article 10.5281/zenodo.10602099 1407-8953 10602099 *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 .