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A new cavernicolous species of crab of the genus Balssiathelphusa Bott, 1969 (Crustacea, Brachyura, Gecarcinucidae) from eastern Borneo

Peter K. L. NG & Danièle GUINOT

en Zoosystema 36 (3) - Pages 623-629

Published on 26 September 2014

A fourth species of gecarcinucid freshwater crab of the genus Balssiathelphusa Bott, 1969, is described from a cave system in eastern Kalimantan, Indonesia in Borneo. It is closest to B. cursor Ng, 1986, from Kalimantan, but can easily be distinguished from congeners by its relatively wider carapace, elongated ambulatory legs and characteristic male first gonopod structure. Although found only in caves, it is not regarded as a troglobite because its eyes are not reduced and the cornea are fully pigmented.

Keywords :

Balssiathelphusa, caves, eastern Kalimantan, Borneo, new species.

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