Five Subtidal Species of the Family Pilumnidae (Crustacea, Decapoda, Brachyura) from the Philippines, with Comparative Notes on Pilumnus hirsutissimus Takeda and Komatsu, 2020, from Japan

抄録

Five crab species of three genera in the family Pilumnidae, viz., Heteropilumnus planus Ng and Lin, 2023, Pilumnus caerulescens A. Milne-Edwards, 1873, an unidentified Pilumnus species (P. aff. purpureus A. Milne-Edwards, 1873), P. neglectus Balss, 1933, and Viaderiana sentus Ng, Dai and Yang, 1997, are recorded from subtidal waters of Luzon, the Philippines, with taxonomic notes and photographs of all the species. Pilumnus caerulescens is compared with its morphologically close species, P. hirsutissimus Takeda and Komatsu, 2020, from the Japanese mainland. Of the recorded five species, H. planus, P. aff. purpureus, and V. sentus are new to the Philippine carcinological fauna.