The Indo-Pacific Pilumnidae XVIII. New species and new records from Taiwan (Decapoda, Brachyura)

Abstract

Two species of Pilumnus, P. orbitospinis Rathbun, 1911, and P. spinulus Shen, 1932, are newly recorded from Taiwan. Two new species, Pilumnus chani and Typhlocarcinops yui, are also described. Pilumnus chani is similar to P. ikedai Takeda & Miyake, 1968, from Japan, but can easily be distinguished by its frontal margin being lined with rounded granules, blunter anterolateral teeth and relatively longer ambulatory legs. Typhlocarcinops yui is allied to T. canaliculata Rathbun, 1909, from Thailand, but can be separated by the cleft anterolateral margin of its carapace and the distinctive form of its male first pleopod.