Arcotheres placunicola, a new species of pea crab (Crustacea: Brachyura: Pinnotheridae) from the window-pane shell, Placuna ephippium Philipsson, 1788 (Placunidae) in Singapore

Digital Gems > Biodiversity Library of Southeast Asia

Language

English

Creator

Ng, P. K. L.

Source Title

The Raffles Bulletin of Zoology

Publication date

2018/08/23

Publisher

Dept. of Zoology, National University of Singapore, Singapore

Page

474–485

Content Type

Journal Article

Object Type

Text

Terms of Use

Open Access

Access Status

Open

Repository

NUS Libraries

Start File Page

474

End File Page

485

Volume

66

Issue

2

Call Number

QL319 NMB

Subject

Pinnotheridae -- Singapore -- Classification
Pinnotheridae -- Singapore -- Identification

Keyword

Crabs
Pinnotheroidea
symbiosis
Placunidae
taxonomy
new species
Southeast Asia

Abstract

A new species of pea crab Arcotheres Manning, 1993 (Pinnotheridae), is described from the windowpane shell, Placuna ephippium (Philipsson, 1788) (Placunidae) in Singapore. The species had previously been incorrectly identified as Arcotheres similis (Bürger, 1895) but with the redescription of the types by Ahyong & Ng (2007), this is now known to be a very different taxon. Arcotheres placunicola n. sp. is superficially similar to A. palaensis (Bürger, 1895) and A. guinotae Campos, 2001, but can easily be distinguished by the structures of the third maxilliped, as well as proportions of the chelae and ambulatory legs. The only other species known to live exclusively in placunid shells, A. placunae (Hornell & Southwell, 1909) from India, is markedly different in the form of the carapace and ambulatory leg structures.

Permalink

https://oa.nus.libnova.com/view/52734