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Pagurus pollicaris
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Malacostraca
Order:	Decapoda
Suborder:	Pleocyemata
Infraorder:	Anomura
Family:	Paguridae
Genus:	Pagurus
Species:	P. pollicaris
Binomial name
Pagurus pollicaris Say, 1817

Pagurus pollicaris is a hermit crab commonly found along the Atlantic coast of North America from New Brunswick to the Gulf of Mexico. It is known by a number of common names, including gray hermit crab, flat-clawed hermit crab, flatclaw hermit crab, shield hermit crab, thumb-clawed hermit crab, broad-clawed hermit crab, and warty hermit crab.

P. pollicaris inhabits the shells of shark eye snails and whelks. It grows to a length of 31 millimetres (1.2 in) and a width of 25 mm (1.0 in). The shell is often shared by the commensal zebra flatworm (Stylochus ellipticus).

The diet of the flat-clawed hermit crab comprises organic matter, algae, and sometimes other hermit crabs. Fish are the most important predators of this species.

References

1. ^ "Pagurus pollicaris Say, 1817". Integrated Taxonomic Information System.
2. ^ Andrew J. Martinez & Candace Storm Martinez (2003). "Flat-clawed hermit crab Pagurus pollicaris". Marine Life of the North Atlantic: Canada to New England (3rd ed.). Aqua Quest Publications. p. 162. ISBN 978-1-881652-32-8.
3. Susan B. Rothschild (2004). Beachcomber's Guide to Gulf Coast Marine Life: Texas, Louisiana, Mississippi, Alabama, and Florida (3rd ed.). Taylor Trade Publications. ISBN 978-1-58979-061-2.
4. ^ Alice Jane Lippson & Robert L. Lippson (2006). "Intertidal flats". Life in the Chesapeake Bay (3rd ed.). Johns Hopkins University Press. pp. 57–93. ISBN 978-0-8018-8338-5.
5. R. P. Cowles (1930). "A biological study of the offshore waters of Chesapeake Bay" (PDF). Bulletin of the Bureau of Fisheries. 46: 276–381.

• Hermit crabs
• Anomura of the Atlantic Ocean
• Crustaceans described in 1817