A study on amphipods from the superfamily Stegocephaloidea Dana 1852 from the northeastern Pacific region: systematics and distributional ecology

Abstract

Nine species (including five new to science) of non-lafystiid stegocephaloid amphipods have been recognized within the collections of the Canadian Museum of Nature from the NE Pacific (Alaska to Oregon), viz. Acanthonotozoma rusanovae Bryazgin 1974 (Acanthonotozomatidae), Iphimedia rickettsi Shoemaker 1931 (Iphimediidae), Parandania boecki (Stebbing 1888), Phippsiella cascadiensis n.sp., Stegocephalexia penelope n. gen., n. sp., Stegocephalopsis mamillidacta n. sp. (Stegocephalidae). Odius kelleri Bruggen 1907 is reallocated to Cryptodius n. gen., and C. unguidactylus n. sp. and Imbrexodius oclairi n. gen., n. sp. (Odiidae) are also described. Keys are presented which allow the genera of Odiidae of the world, and of this collection of species, to be distinguished.

Keywords :

• Amphipoda
• Stegocephaloidea
• Stegocephalexia
• Cryptodius
• Imbrexodius
• taxonomy
• NE Pacific