Scorpion spider crab

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Scorpion spider crab
Inachus dorsettensis.jpg
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca
Order: Decapoda
Infraorder: Brachyura
Family: Inachidae
Genus: Inachus
Species: I. dorsettensis
Binomial name
Inachus dorsettensis
(Pennant, 1777)

Inachus dorsettensis, commonly known as the scorpion spider crab, is a species of crab generally found on loose substrates (stony bottoms to mud) from 6 metres (20 ft) depth down to about 100 m (330 ft).[1] It is found along the east coast of the Atlantic Ocean from Norway to South Africa, and also in the Mediterranean Sea.[1]


They are usually seen covered with sponge which they apply themselves. The carapace of a fully grown male is roughly 30 millimetres (1.2 in) long and slightly narrower than it is long.[1] I. dorsettensis resembles the closely related species Inachus phalangium, but has more prominent spines on the carapace.[1]


  1. ^ a b c d P. J. Hayward, M. J. Isaac, P. Makings, J. Moyse, E. Naylor & G. Smaldon (1995). "Crustaceans". In P. J. Hayward & John Stanley Ryland. Handbook of the Marine Fauna of North-west Europe. Oxford University Press. pp. 289–461. ISBN 978-0-19-854055-7.