A new species of trogloplacine crab of the genus Australocarcinus Davie, 1988 from a freshwater stream in Mahé, Seychelles (Crustacea, Brachyura, Chasmocarcinidae)
Date
2018-02-19
Authors
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Publisher
Pensoft
Abstract
A new species of freshwater chasmocarcinid crab, Australocarcinus insperatus sp. n., is described from the Seychelles Islands in the Indian Ocean. This is the first record of the genus and the subfamily Trogloplacinae Guinot, 1986, from the Indian Ocean, with all other members previously recorded from Australia, New Britain, New Caledonia, and Palau in the Pacific Ocean. The disjunct distribution of Australocarcinus is unexpected considering all trogoplacines are believed to practice direct development, lacking free-swimming larval stages. The new species is morphologically most similar to A. riparius Davie, 1988, from Queensland, Australia, but can be distinguished from its three congeners on the basis of the structures of its carapace, ambulatory legs and male first gonopod.
Description
CITATION: Ng, P. K. L. & Daniels, S. R. 2018. A new species of trogloplacine crab of the genus Australocarcinus Davie, 1988 from a freshwater stream in Mahé, Seychelles (Crustacea, Brachyura, Chasmocarcinidae). ZooKeys, 738:27–35, doi:10.3897/zookeys.738.23708.
The original publication is available at https://zookeys.pensoft.net
The original publication is available at https://zookeys.pensoft.net
Keywords
Chasmocarcinidae, Trogloplacine crab -- Classification, Australocarcinus insperatus sp. n. -- Anatomy, Australocarcinus insperatus sp. n. -- Morphology
Citation
Ng, P. K. L. & Daniels, S. R. 2018. A new species of trogloplacine crab of the genus Australocarcinus Davie, 1988 from a freshwater stream in Mahé, Seychelles (Crustacea, Brachyura, Chasmocarcinidae). ZooKeys, 738:27–35, doi:10.3897/zookeys.738.23708.