Krøyer, 1838

Description:
Body usually with numerous spines and tubercles, spination variable. Usually the cephalon is furnished with at least a single spine. Length of largest male 20 mm, largest female 20 mm, smallest ovigerous female 9 mm.
Peduncle of antenna 1 occasionally with dense setules, but often without. Length of antenna 2 longer or shorter than peduncle of antenna 1.
Mouthparts typical of genus, right lacinia mobilis 5-toothed.
Propodus of gnathopod 1 with 2 proximal grasping spines, grasping margin of dactylus and propodus serrate. Palm of propodus of gnathopod 2 with proximal a poison tooth and a small tooth on the inner surface, distally with a small tooth, a notch and a rectangular projection, anterodistal margin occasionally with a projection; basis short and robust. Ratio of total length to the length of the basis of gnathopod 2 usually greater than 13.0.
Gills usually elliptical, occasionally oval and inflated.
Propodus of pereiopods 5-7 with a pair of proximal grasping spines.
Abdomen of male and female typical of genus.

Habitat:
C. septentrionalis does not appear to be specific in its habitat, having been collected from brown, green and red algae, sea grass, sponges, hydroids, alcyonarians and tunicates. It ranges in depth from the surface to 1026 metres.

Distribution:
Murman coast; Novaya Zemlya; White Sea; N. Russia; Norway to France and British Islands; Faeroe Islands; Jan Mayen; Iceland; East and West Greenland; Baffin Bay and Davis Straits; coast of North America from Hudson Bay to Maine.

Kingdom Animalia
Phylum Arthropoda
Class Crustacea
Subclass Malacostraca
Superorder Peracarida
Order Amphipoda
Suborder Caprellidea
Family Caprellidae
Genus Caprella
Species septentrionalis

Status in World Register of Marine Species

Accepted name: Caprella septentrionalis Krøyer, 1838

Scientific synonyms and common names

Squilla lobata [not Müller] O. Fabricius, 1780
Caprella cercopoides White, 1852
Caprella robusta Stimpson, 1854
Caprella punctata [not Risso] Boeck, 1861
Caprella stimpsoni Bate, 1862
Caprella hystrix [not Krøyer] Bate and Westwood, 1868
Caprella longicornis Boeck, 1871
Caprella lovéni Boeck, 1871
Caprella hystryx Bate, 1878
Caprella septentrionalis f. typica Mayer, 1890
Caprella septentrionalis f. longicornis Mayer, 1890
Caprella septentrionalis f. nodigera Mayer, 1890
Caprella septentrionalis f. polyceros Mayer, 1890
Caprella septentrionalis f. parva Mayer, 1890
Caprella monocera G. Sars, 1895
Caprella septentrionalis f. spinigera Hansen, 1895
Caprella septentrionalis longicornis M. Rathbun, 1905
Caprella septentrionalis stimpsoni M. Rathbun, 1905
Caprella septentrionalis polyceros M. Rathbun, 1905
Caprella septentrionalis lovéni Stephensen, 1929
Caprella septentrionalis monocera Stephensen, 1929
Caprella septentrionalis punctata Stephensen, 1929
Caprella septentrionalis f. monocera Oldevig, 1933
Caprella septentrionalis f. punctata Oldevig, 1933
Caprella septentrionalis f. lovéni Oldevig, 1933
Caprella lovéni Stephensen, 1940

Isaac, M.J. & J. Moyse, 1990. Crustacea I: Entomostraca. In: The Marine Fauna of the British Isles and North-West Europe (eds. Hayward and Ryland, 1990). Clarendon Press, Oxford.

Laubitz, D.R., 1972. The Caprellidae (Crustacea, Amphipoda) of Atlantic and Arctic Canada. National Museum of Natural Sciences, Publications in Biological Oceanography, 4.

McCain, J.C., 1968. The Caprellidae (Crustacea: Amphipoda) of the Western North Atlantic. Smithsonian Institution, bulletin, 278.

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