Materials to knowledge of aquatic beetles (Coleoptera: Hydroadephaga, Hydrophilidea, Staphylinoidea, Byrrhoidea) of the Kashubian Landscape Park

Materials to knowledge of aquatic beetles (Coleoptera: Hydroadephaga, Hydrophiloidea, Staphylinoidea, Byrrhoidea) of the Kashubian Landscape Park. The paper presents new data about the distribution of aquatic beetles (Coleoptera: Hydroadephaga, Hydrophiloidea, Staphylinoidea, Byrrhoidea) in the Kashubian Landscape Park. During the study 82 species were found in this area. Among the reported species a few are rare in Poland, such as: Dytiscus lapponicus, Graphoderus bilineatus, Rhantus incognitus, Hydroporus gyllenhalii, Hydroporus morio