Thursday, March 23, 2017

[Crustacea • 2017] Haberma tingkok • A New Species of Micro-mangrove Crab of the Genus Haberma Ng & Schubart, 2002 (Brachyura, Sesarmidae) from Hong Kong


Haberma tingkok 
Cannicci & Ng, 2017
 

Abstract
The sesarmid genus Haberma Ng & Schubart, 2002, currently contains two species of small mangrove crabs with the first two pairs of the male ambulatory legs possessing characteristic subchelate dactyli and propodi. A new species, Haberma tingkok, is here described from Hong Kong. It can be separated from H. nanum Ng & Schubart, 2002 (from Singapore), and H. kamora Rahayu & Ng, 2005 (from Indonesian Papua) by its carapace shape, proportions of the ambulatory legs, and structures of the male pleon and male first gonopod.

Keywords: Crab, Hong Kong, new species, Sesarmidae, subtropical mangroves, taxonomy


Systematics

Family Sesarmidae Dana, 1851

Genus Haberma Ng & Schubart, 2002

Haberma tingkok sp. n.


Figure 1. Haberma tingkok sp. n., colour in life, holotype ♂ (8.5 × 8.2 mm) (ZRC 2016.620). A dorsal view B ventral view. 


Etymology: The species is named after the Ting Kok mangrove area, which has been designated a “Site of Special Scientific Interest” in Hong Kong. The name is used as a noun in apposition.

Ecology: The specimens were found climbing trees of Kandelia obovata Sheue, Liu & Yong, 2003, and Aegiceras corniculatus (L.) Bianco, 1837, in the mid intertidal area of the Ting Kok mangrove stand, in Tolo Harbour. The area is the largest mangrove stand on the eastern coast of Hong Kong and is largely dominated by K. obovata trees, up to 3 m tall. All specimens, including the ovigerous females, were collected at a height of approximately 1.5–1.8 m above the substrate, walking on the bark of the branches at ebbing and low tides.


Stefano Cannicci and Peter L. K. Ng. 2017. A New Species of Micro-mangrove Crab of the Genus Haberma Ng & Schubart, 2002 (Crustacea, Brachyura, Sesarmidae) from Hong Kong.
 ZooKeys. 662: 67-78. DOI: 10.3897/zookeys.662.11908

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