FIRST RECORD OF Berosus geminus ( Reiche et Saulcy, 1856) AND Enochrus affinis (Thunberg, 1794) FOR CROATIAN FAUNA (Coleoptera, Hydrophilidae)

Research on the aquatic beetle fauna was conducted in aquatic habitats of Nature Park Kopački rit during the year 2005. One species of water scavenger beetle (Coleoptera, Hydrophilidae) Berosus geminus Reiche et Saulcy, which had not been recorded in Croatia before, was found during this inventory research. Although endangered in Europe, the species Berosus geminus has an optimal habitat in Kopački rit, which has been proven by the collection of 17 specimens. Enochrus affinis Thunberg, was also found during study, representing the first documented occurrence in Croatia. Both species were found in unique flooded areas of Kopački rit. Some morphological, biological and distributional features of these two species are discussed