Abstract
A new species of diastylid cumacean, Vemakylindrus chernyshevi, is described on the basis of material collected from east of Honshu, Japan, at a depth of 504 m. It appears closest to V. multiuncifer Gamo, 1998 and V. hystricosa Gerken, 2002. From V. multiuncifer, the new species is distinguished especially by the direction of the pseudorostrum, the armament of the carapace, the shape of the antennule, and the armament of the telson. The length of the pseudorostrum, the shape of the spines on the carapace, and the structure of the telson and pereopods serve to differentiate the new species from V. hystricosa.
