The largest and most familiar crustaceans belong to Decapoda. The 10,000 species of crabs, shrimps, crayfishes, lobsters, and their relatives are decapods. The first three segments of the decapod thorax are fused with the head to form a cephalothorax and their appendages are maxillipeds. The remaining five pairs of thoracic appendages bear simple or chelate walking legs.

Related categories 4

The American Lobster: Homarus americanus
Research project by Whitney Hill at the University of Wisconsin-LaCrosse.
Anomurans
Provides information on the false crabs and hermit crabs in this infraorder, their biology and distribution.
Asian Shore Crab - Hemigrapus sanguineus
Profile of this species, which is becoming established on the east coast of the US. Includes photos and maps.
Blue Crab
Information on this crustacean, Callinectes sapidus, its life cycle and habitat.
Blue Crab Archives
Provides a great deal of information on Callinectes sapidus, their identification, biology, how they are caught, how to eat them, crab news and a forum.
Callinectes sapidus: Blue Crab
Photograph of this species and information on its taxonomy, description, habitat and distribution, life history, population biology, physical tolerances and ecology.
Cancer magister: Dungeness Crab
Research project by Wesley Luchterhand at the University of Wisconsin-LaCrosse.
Cardisoma guanhumi: Blue Land Crab
Photograph of this species and information on its taxonomy, description, habitat and distribution, life history, population biology, physical tolerances and ecology.
Charybdis hellerii: Indo-Pacific Swimming Crab
Photograph of this species and information on its taxonomy, description, habitat and distribution, life history, population biology, physical tolerances and ecology.
Coconut Crab: Birgus latro
Photographs and information from ARKive including description, range, habitat, biology, threats and conservation.
Common Hermit Crab
Several photographs of Pagurus berhardus with information on its identification, breeding, habitat, food, range and bionomics.
Common Hermit Crab: Pagurus bernhardus
Photographs and information from ARKive including classification, status, description, range, habitat, biology, threats and conservation.
Common Prawn: Palaemon serratus
Photographs and information from ARKive including classification, status, description, range, habitat, biology, threats and conservation.
Common Shore Crab: Carcinus maenas
Photographs and information from ARKive including classification, status, description, range, habitat, biology, threats and conservation.
Crabs
Photographs and information on the species found round the coasts of Britain.
Crayfish Photo Gallery
Images of dozens of species, mainly from the central United States.
Crustacea
Extensive information on the crabs, lobsters and shrimps found in the waters round Britain.
Decapod Crabs
A useful guide to Australian crabs and their biology, providing for each species a description and details of distribution, habitat and biology.
Decorator Crabs
Information and photographs of brachyuran crabs in the superfamily Majoidea that have the unusual habit of decorating their carapace with bits of algae and invertebrates.
Dominance in Crayfish.
Article from the Journal of Neuroscience on patterns of behavior, including the activation of neural circuits, during the formation of a dominance hierarchy in crayfish.
Edible Crab
Several photographs of the edible or brown crab, Cancer pagurus, and its discarded exoskeleton.
Edible Crab: Cancer pagurus
Photographs and information from ARKive including classification, status, description, range, habitat, biology, threats and conservation.
Fiddler Crabs (Genus Uca)
Much information on these crabs, their classification, systematics, phylogeny, morphology, life cycle and range.
Field Guide to Kenyan Mangroves
An introduction to flora and fauna of mangrove habitats in Kenya, with a focus on crabs.
Flat-clawed Hermit Crab
Photograph and description of Pagurus pollicaris.
Giant Freshwater Crayfish: Astacopsis gouldi
Information from ARKive on this rare Australian species.
Hairy Crab
Several photographs of this crab, Pilumnus hirtellus, which is characterised by unequal sized claws.
Kiwa Hirsuta
Provides information on this deep sea species, first discovered in 2001, its discovery, appearance, habitat and nutrition.
Kiwa hirsuta: The Yeti Crab
Research project by Rourke Decker at the University of Wisconsin-LaCrosse.
Krill
Information from Wikipedia on these minute crustaceans that form an important part of the food chain for many larger animals.
Land Crabs in the Bahamas.
Rod Attrill’s article outlines the strange life of Cardisoma guanhumi, and the mosquito and fish that share its burrow.
The Lobster Institute
A cooperative program of research and education with the lobster industry at the University of Maine. Information generated through the Institute about the American lobster (Homarus americanus) is intended to help conserve and enhance the resource, thereby ensuring the continuance of a strong and healthy industry in the state and the region.
Long-clawed Hermit Crab
Photograph and description of Pagurus longicarpus.
Long-legged Spider Crab
Several photographs of this crab, Macropodia rostrata.
Masked Crab: Corystes cassivelaunus
Photographs and information from ARKive including classification, status, description, range, habitat, biology, threats and conservation.
Panulirus argus: Spiny Lobster
Photograph of this species and information on its taxonomy, description, habitat and distribution, life history, population biology, physical tolerances and ecology.
Penaeus aztecus: Brown Shrimp
Photograph of this species and information on its taxonomy, description, habitat and distribution, life history, population biology, physical tolerances and ecology.
Penaeus duorarum: Pink Shrimp
Photograph of this species and information on its taxonomy, description, habitat and distribution, life history, population biology, physical tolerances and ecology.
Penaeus setiferus: White Shrimp
Photograph of this species and information on its taxonomy, description, habitat and distribution, life history, population biology, physical tolerances and ecology.
Petrolisthes armatus: Green Porcelain Crab
Photograph of this species and information on its taxonomy, description, habitat and distribution, life history, population biology, physical tolerances, ecology and invasive information.
Prawns and Shrimps
Photographs and information on species found round the coasts of Britain, with help in distinguishing a prawn from a shrimp.
Ray Bauer Research: Marine Biology and Shrimps
Research projects by Bauer and students on caridean and penaeid shrimps and other decapod crustaceans, emphasizing mating systems, breeding, hermaphroditism, coloration, grooming, fouling, seagrass fauna, publications.
Red Crab - Gecarcoidea natalis
Description, bulletins, diet, habitat, breeding, migration, and human impact on the most populous crab species on Christmas Island.
Red King Crab
Research project by Sarah Luchsinger on Paralithodes camtschatica, including its classification, habitat, adaptation, nutrition, reproduction and interactions with other species.
The Red Mangrove-tree Crab
Photographic study of this crustacean by Hugh Mitchell-Tapping with close-ups of various appendages and information and photographs of developing larvae.
Scylla serrata
Taxonomy and description of the serrated swimming crab, its habitat and distribution, life history, physical tolerances, community ecology and invasion information.
Shore Crab
Several photographs of Carcinus maenas with information on its identification, breeding, habitat, food, range and bionomics.
Sicyonia brevirostris: Brown Rock Shrimp
Photograph of this species and information on its taxonomy, description, habitat and distribution, life history, population biology, physical tolerances and ecology.
Spiny Spider Crab: Maja squinado
Photograph of a well-camouflaged crab and an article by Peter Glanvill on the behavior of this species. Also other photographs and accounts of sightings round the coasts of Britain.
Sterrer’s Cave Shrimp: Parhippolyte sterreri
Photographs and information from ARKive including classification, status, description, range, habitat, biology, threats and conservation.
Velvet Swimming Crab: Necora puber
Photographs and information from ARKive including classification, status, description, range, habitat, biology, threats and conservation.
The White Shrimp: Penaeus setiferus
Research project by Hannah Stofflet at the University of Wisconsin-LaCrosse.
Whiteleg Shrimp
Information from Wikipedia on Litopenaeus vannamei from the Eastern Pacific, a species widely grown in shrimp farms for use as food.
Wikipedia: Decapoda
Encyclopedia article covering the order, with details of anatomy, classification, and photos of sample species.
Yabbie Crayfish: Cherax destructor
Photographs and information from ARKive including description, range, habitat, biology, threats and conservation.
Yeti Crab: Kiwa hirsuta
Information and a photograph of this crustacean discovered living in hydrothermal vents deep in the Pacific Ocean in 2005.
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Last update:
October 1, 2016 at 16:15:12 UTC
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