Etisus andamanicus   Maya Deb,  1992 (Crab)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Chordata
Class: Malacostraca
Order:Decapoda
Family:Xanthidae

Description
Size: Length 5 mm; width 8 mm; front 2 mm

Carapace broadly oval and moderately convex in both the directions. Entire carapace faintly divided into regional areoles; posterior one third indistinctly areolated. Surface bare, not quite smooth because of the presence of post frontal ridge. Frontal, protogastric ridges and two curved ridges by the side of mesogastric areas present on the dorsal surface. Front laminar, deflexed, free edge slightly convex, smooth with a fine median fissure. The lobes are well separated from the upper orbital corner by a notch. Orbits elongate, eyes small, orbital edge sharp.

Antero- lateral edge with five teeth including the outer orbital corner. First two teeth low, small and equal, last tooth spine tipped, small; third tooth largest. Both third and fourth teeth forwardly directed. Only the present right cheleaped is stout, long, narrow and devoid of any hairs and tubercles on outer surfaces. Inner corner of wrist spine tipped, palm long, narrow, height of palm being half of its length. Fingers stout, curved, cutting edges evenly dentate and narrowly gaping when closed. Leg joints fused, narrow, smooth and scantly hairy.

Remarks: The female specimen of Etisus andamanicus is markedly different from allied Indian species in shape, nature and number of its anterolateral teeth, presence of faint frontal, protogastric ridges and two ridges by the side of mesogastric areas which are not present in the most closely allied species Eisus anaglyptus and E. dentatus


Synonym (s)
Etisodes Dana, 1852

Common Name (s)
Economic Importance and Threats

Ecology

Biogeography


• Andaman and Nicobar Islands, Cinque Island INDIA

Literature Source(s)
  • Deb, M (1992) Two new species of Xanthid crabs from Bay Islands Journal of the Andaman Science Association Andaman Science Association, Port Blair 8(2) 121-124 Available at - NIO,Goa

Page last updated on:2011-05-04

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