Morphological and phylogenetic evidence for a new species of Parasesarma De Man, 1895 (Crustacea: Decapoda: Brachyura: Sesarmidae) from the Malay Peninsula, previously referred to as Parasesarma indiarum (Tweedie, 1940)

Digital Gems > Biodiversity Library of Southeast Asia

Language

English

Creator

Shahdadi, A.
Ng, P. K. L.
Schubart, C. D.

Source Title

The Raffles Bulletin of Zoology

Publication date

2018/11/19

Publisher

Dept. of Zoology, National University of Singapore, Singapore

Page

739–762

Content Type

Journal Article

Object Type

Text

Terms of Use

Open Access

Access Status

Open

Repository

NUS Libraries

Start File Page

739

End File Page

762

Volume

66

Issue

1

Call Number

QL319 NMB

Subject

Crabs -- Indonesia -- Identification
Crabs -- Malaysia -- Identification
Crabs -- Singapore -- Identification

Keyword

taxonomy
mangrove crab
pseudocryptic species
new species
Singapore
Peninsular Malaysia
Indonesia

Abstract

A colourful crab currently referred to as Parasesarma indiarum (Tweedie, 1940) is a relatively common species in Southeast Asian mangroves and has been recorded from Singapore, Malaysia, and Indonesia. The present study compares the material from Singapore and Peninsular Malaysia to the type specimens from Ambon, and recognises two species based on their morphology and genetic distances. The structure of the chelar dactylar tubercles and molecular data support the distinction of specimens originating from Peninsular Malaysia and Singapore from those of Ambon corresponding to P. indiarum sensu stricto. We here describe them as a separate species, Parasesarma peninsulare new species, and compare it with allied congeners.

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https://oa.nus.libnova.com/view/52766