General Description
With 2 branchial spines on margin of carapace and third spine more posterior and dorsal. Intercalated spine not reaching end of antorbital spine on supraorbital eave, sitting dorsally so that eave and postorbital lobe almost in contact; with pits on sternum of male; walking legs not much longer than carapace length. Up to 5 cm long.
Biology
This species of Leptomithrax is much like L. gaimardii but only one-third as big. The carapace, rostral spines and eye orbit are similar but its legs don't extend forward much beyond the rostrum as they do in L. gaimardii. Although it is just as common as the great spider crab over a wide depth range, its denser camouflage ensures it is less commonly seen.
Distribution
Southern temperate oceans, including south-eastern Australia.
Habitat
Intertidal, to 140 m depth.
More Information
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Animal Type
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Animal SubType
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Brief Id
Pear-shaped crab with walking legs not much longer than carapace length. Male with distinctive pits rimmed with beads on the underside at the base of the legs.
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Maximum Size
5 cm
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Habitats
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Diet
Organic matter
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Hazards
Not harmful but a nip from large claws could be painful
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Endemicity
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Commercial
No
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Conservation Statuses
DSE Advisory List: Not listed, EPBC Act 1999: Not listed, IUCN Red List: Not listed
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Depths
Shore (0-1 m), Shallow (1-30 m), Deep ( > 30 m)
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Water Column Locations
On or near seafloor
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Taxon Name
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Scientific Author
(Milne Edwards, 1851)
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Common Name
Ribbed Spider Crab
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Phylum
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Subphylum
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Superclass
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Class
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Subclass
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Superorder
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Order
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Suborder
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Infraorder
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Family
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Subfamily
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Genus
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Species Name
sternocostulatus