Zoological Studies

Vol. 38 No. 3, 1999

The Brachyuran Crabs (Crustacea: Decapoda: Eumedonidae and Portunidae) Symbiotic with Echinoderms in Taiwan

Peter K. L. Ng1 and Ming-Shiou Jeng2,*

1School of Biological Sciences, National University of Singapore, Kent Ridge, Singapore 119260, Republic of Singapore
2Institute of Zoology, Academia Sinica, Taipei, Taiwan 115

Peter K. L. Ng and Ming-Shiou Jeng (1999) Five species of brachyuran crabs in 2 families (Eumedonidae and Portunidae) are reported as symbiotic with echinoderms in Taiwan. Echinoecus pentagonus is associated with sea urchins (Echinoidea), while Harrovia albolineata, Permanotus purpureus, and Tiaramedon spinosum are reported from featherstars (Crinoidea). All four are eumedonids. One portunid, Lissocarcinus orbicularis, is reported from sea cucumbers (Holothuroidea). Of these, 4 species, Echinoecus pentagonus, Harrovia albolineata, Permanotus purpureus, and Lissocarcinus orbicularis are new records for the island. Specimens previously recorded as Harrovia elegans are here shown to be H. albolineata instead.

Key words: Brachyura, Taiwan, Eumedonidae, Portunidae, Echinoderm symbionts.

*Correspondence: Fax: 886-2-27858059. E-mail: jengms@gate.sinica.edu.tw