New records of Diapbanosoma pseudodubium Korovchinsky, 2000 (Crustacea: Cladocera: Sididae) from Eastern Siberia, with description of males of this species

摘要

The males of rare species Diaphanosoma pseudodubium Korovchinsky, 2000 are described for the first time from the basins of Vilyui River (Central Yakutia) and the Lower Yenisei River (Krasnoyarsk region). This is supplemented by the description of somemorphological structures of females, which were previously missed. Based on known localities it may be suggested that range of the species embraces the vast area of the Eastern Siberia and the Far East.