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TaxonomyBrowse
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Species Idotea balthica

Idotea balthica Idotea balthica? - Idotea balthica Idotea balthica Idotea balthica Marine Isopod - Idotea balthica Idotea species? - Idotea balthica Idotea balthica Marine Isopod - Idotea balthica
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Crustacea (Crustaceans)
Class Malacostraca (Malacostracans)
Superorder Peracarida (Peracarida (Amphipods and Isopods))
Order Isopoda (Isopods)
Suborder Valvifera
Family Idoteidae
Genus Idotea
Species balthica (Idotea balthica)
Synonyms and other taxonomic changes
Idotea balthica (Pallas, 1772)
Original Combination:
Oniscus balthica Pallas, 1772
Synonyms:
Idotea pusilla Eichwald, 1842
Size
Male is larger than female, and can reach 40mm (1)
Male 10-30mm; female 10-18 (2)
Identification
The carapace is yellow, brown or green with small white spots; the female is usually darker. The species can be distinguished from other idoteids by the shape of the telson, which is dorsally keeled with straight sides, and has a distinct spine at the end. The distinct head bears two dorso-lateral eyes, a pair of short antennules, and a pair of antennae. (1) (2)
Range
Abundant south of Cape Cod, less common to the north.
Habitat
This marine isopod lives on seaweed in the subtidal zone of rocky shores. (1)
Internet References
Wikipedia - brief description and image (1)
Encylopdia of Life - comprehensive description and images (2)