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 Rissoides desmaresti is a burrowing shrimp about 10 cm long. The body is elongate with a small shield shaped carapace. The chelipeds (claws) are large and characteristically mantis-like for capturing prey. The raptorial claws are the spearing type compared to the club type also of mantis shrimps and have 5 spines on the terminal segment (dactylus) for capturing and holding prey.Can be distinguished from Platysquilla eusebia, the only other British mantis shrimp species, by the number of spines on the dactylus of the raptorial claw. Rissoides desmaresti has 5 spines and Platysquilla eusebia has 12-15 spines. Occasionally catches of Rissoides desmaresti sometimes generates press coverage and suggestions of global warming. The species has been recorded in the Plymouth area since 1900 including intertidally in Salcombe harbour (MBA, 1957).


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©  The Marine Biological Association of the United Kingdom

Source: Marine Life Information Network

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