Latonopsis kokuboi KADOTA, 1961 (Cladocera : Sididae) in Japan

Abstract

A rare species of Genus Latonopsis, Latonopsis kokuboi KADOTA, 1961,collected from Lake Kejou-numa, on August 30, 2006 was studied. Female : Body outline widely oval, translucent, yellowish in colour. Body length 0.9〜1.0 mm. First antennae 2-jointed, the terminal joint 4 times as long as the proximal joint, forming long slender flagellum. Antennal seatae 4-7/0-1-4. Postabdomen varies from 8〜11 anal denticles on each side. Male: unknown.