![]() ![]() The thoracic legs are modified, closer to their back, with a pair of hinged pincers. DromiaceaĬrabs in this group are classified by their last pair of legs. In addition to taxonomic status, crabs have been further broken down into four main categories for classification. Infraorder: Brachyura - short abdomens that fold toward the underside of the animal’s body. Suborder: Pleocyemata - fertilised eggs incubated by the female and remain on the swimming legs (pleopods) until hatching. Order: Decapoda - the head and thorax are fused and covered by a carapace. Subphylum: Crustacea - aquatic arthropods with four or more pairs of limbs with one or more modified into pincers.Ĭlass: Malacostraca - crustaceans that have compound eyes, usually on stalks. Phylum: Arthropoda - invertebrates (segmented body, external skeleton, & jointed limbs) that include insects, spiders, and crustaceans. Kingdom: Animalia - a group of all multicellular animals Here’s the general taxonomic structure of crabs. There are different levels of classification, and the further down we go, the more specific their taxonomic names will be. All living creatures will be divided into groups based on what they have in common. Taxonomy is a part of science that helps us to classify all living things on earth. They have stalked eyes, and their head and thorax fused together, covered by a carapace. At least one of these appendages will be modified into a pair of pincers or claws. Jump straight to the Types of Crabs listing ↡ Classification & SpeciesĪll crabs are classified as decapods: a crustacean with five pairs of legs on the upper half of their body. Xanthid Crabs (Mosaic Crab, Toxic Reef Crab, & Shawl Crab) ![]()
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