CLADOCERA (CRUSTACEA, BRANCHIOPODA) FROM THE ZEYA RIVER BASIN (AMUR REGION, RUSSIA). 2. DESCRIPTION OF NEW TAXA

The second communication on the Cladocera (Crustacea) fauna of the Zeya River basin (Amur region) deals with description of new taxa. Disparalona ikarus sp. n. (Chydoridae: Chydorinae) differs from the other species of this genus in the presence of large lateral outgrowths on valves and in the shape of postabdomen. Mono-spilus daedalus sp. n. (Chydoridae, Aloninae) differs from the common in Palearctic M. dispar Sars, 1862 by the presence of lateral outgrowth in valves and in special traits of the structure of thoracic limbs. The new genus Nedorhynchotalona gen. n. with one species N. chiangi sp. n. differs from most genera of Aloninae in a long rostrum, shape of postadomen, and the absence of head pores. While the representatives of the first two taxa at present are known only from the Zeya basin, the latter was indicated previously by Chiang and Du (1979) from several provinces of China as Rhynchotalona falcata (Sars, 1862).