A new distribution record of the Pentagonal Sea Urchin Crab Echinoecus pentagonus (A. Milne-Edwards, 1879) (Decapoda: Brachyura: Pilumnidae) from the Andaman Islands, India

摘要

First time, a Sea Urchin Crab, Echinoecus pentagonus (A. Milne-Edwards, 1879) is recorded from the rocky intertidal region of the Andaman Islands. It is a symbiotic crab live with Sea Urchin. This species is recorded from the Lakshadweep and Nicobar Islands but still there is no record from mainland India. A detail description of the species with standard photographs and line diagrams is provided.