Freshwater Crab Information Web Taiwanese Naturalist

Crustaceana Monographs 14: 661-675 (2010)

A new freshwater crab of the genus Geothelphusa (Brachyura, Potamidae) from southwestern Taiwan

Hsi-Te Shih, Jhy-Yun Shih & Jung-Hsiang Lee

Geothelphusa holthuisi sp. nov. (Crustacea: Brachyura: Potamidae), a new species of freshwater crab from southwestern Taiwan, is described on the basis of morphological and molecular evidence. Morphologically, this new species is similar to G. ferruginea Shy, Ng & Yu, 1994, but differs in the shape of the male first gonopods, carapace and male abdomen. Although G. holthuisi occurs in southwestern Taiwan, west of the Central Range, the molecular data indicates it belongs with the clade from eastern Taiwan. This suggests that its ancestors dispersed from eastern Taiwan, across the montane Central Range.

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