Gelasimus marionis nitidus   Dana  (Crab)
Organism information awaits expert curation
Class: Malacostraca

Size: Length of carapace: 17 mm; Breadth of carapace: 27 mm; Breadth of front: 1.5 mm; Length of larger hand: 45 mm

Color: Color in spirit blackish, claws white

This variety is distinguished from Gelasimus marionis by the cutting edge of the thumb being thrown into a W-shaped curve owing to the strong projection of two large triangular lobes.
The anterior male abdominal appendages are suddenly sharp at the tip, which bears numerous long hairs. There is a lobe near the tip, from which a wide groove passes towards the base.
The spooned hairs on the second maxillipeds are present. The 'spoon' is wider than in Gelasimus annulipes and consists of about five lobes, the proximal three of which are pointed.
Tesch (1918) calls this variety as only a claw-variation of Gelasimus marionis. According to Tweedie it is probably a case of 'geographically local dimorphism confined to the male'. The female in the two forms are inseparable. This view is confirmed by the similarity of the anterior male abdominal appendages in the two forms.

Synonym (s)
Uca marionis var. nitidus Suvatti 1950
Gelasimus marionis var. nitidus Alcock 1900
Gelasimus marionis nitidus Sakai 1939

Common Name (s)
Economic Importance and Threats

Habitat:  Coastal


• Maharashtra, Mumbai INDIA
• Bay of Bengal
• Arabian Sea
• Red Sea

Literature Source(s)
  • Chhapgar, BF (1957) Marine crabs of Bombay state Contribution No. 1 of the Taraporevala Marine Biological Station Marine Biological Station, Department of fisheries, Bombay 89 pp Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -

Page last updated on:21-04-09

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