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An average male measures:
In this species the carapace is four-fifths as long as broad. There are some fine transverse markings on the post-frontal region. The front is about three-fifths the greatest breadth of the carapace; its free edge is sinuous and thin, but hardly laminar. The orbits are little oblique, the inner angle of their lower border being denticulate. The finger of the chelipeds is not much longer than the upper border of the palm. In the last three pairs of legs the greatest breadth of the merus is half its length The terminal segment of the male abdomen is simply triangular. Colour dark bottle-green ; the claws in some adult males are a brilliant violet, in others bright orange, dull in the female ; the legs are striped with alternate light and dark bands. The male abdomen narrows gradually from the base to the terminal segment. The anterior male abdominal appendages are in the form
of a brown chitinous tube with Its tip slightly bilobed and straw-coloured.
Both the borders bear hairs at the distal end.
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