Calappa japonica
| Calappa japonica | |
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| File:Calappa japonica.jpg | |
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C. japonica
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| Calappa japonica Ortmann, 1892
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Calappa japonica, also known as the Japanese shame-faced crab,[1] is a marine species of box crab in the family Calappidae.[2]
Description
Calappa japonica is a large crab, and has a yellow and red colouration.[1] The length of carapace is approximately .65 times the width, with a tuberculated surface. Seven sharp teeth are located around the margins of each clypeiform expansion.[3]
Distribution and habitat
This species was first discovered in Tokyo Bay, Japan. It is now known to occur in regions as far away as Africa,[1] and lives in waters up to 250 metres deep.[1] and has been found in the Red Sea.[4]
Behaviour and diet
This crab is a predator, and feeds on invertebrates such as other crabs, as well as oysters and snails. It has a specially adapted right pincer which it uses to break open snail's shells. There is a large accessory tooth located at the base of the hinged part of the claw located opposite a flat plate on the fixed part. After breaking open the shell, it uses its left pincer. This is sharper and longer than the right.[1]
References
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