Stan poznania chrząszczy wodnych [Coleoptera: Adephaga, Hydrophiloidea, Byrrhoidea] Polski środkowo-wschodniej

Literatural records about true water beetles (sensu JÄCH 1998) of the Middle-Eastern Poland were compiled and critically analysed. 241 species have been recorded so far. Two further species were given basing on false determination (Helophorus micans, Limnebius stagnalis). Species recorded in particular faunistic regions were listed. The fauna of the analysed area was discussed according to its geographical diversity, habitat differentiation and the conservation of endangered habitats. The importance of this area for the protection of beetle species and assemblages was emphasized.