New Record and New Species of The Hermit Crab Genus Diogenes Dana, 1851 (Decapoda: Anomura: Diogenidae) from Singapore

A new species of hermit crab, Diogenes singaporensis, is described based on material from Pulau Ubin, East Johor Strait, Singapore. This new species resembles D. goniochirus Forest, 1956 in having a distal protuberance or elongated ridge each on the outer surface of the palm and the carpus of the left cheliped, but easily distinguished by the presence of a median crest on the outer surface of the palm of the left cheliped and a distal spine on the dorsal surface of the fourth segment of the antennal peduncle. Two other congeneric species D. klaasi Rahayu & Forest, 1995 and D. moosai Rahayu & Forest, 1995 are recorded for the first time from Singapore waters. Raffles Bulletin of Zoology Supplement, No. 31. Hal. 182-192 ISSN 0217-2445