Contribution to the knowledge of genus Besdolus (Plecoptera: Perlodidae)

The conspecificity of putative male B. ventralis described by Zwick and Weinzierl (1995) with the female holotype is confirmed by comparison of fresh Hungarian material. However, the putative larva of B. ventralis is not conspecific but is actually the larva of Besdolus illyricus sp. n. which we describe from Montenegro. Notes on the genus are given.