Lithodidae Dromiidae Atelecyclidae Cancridae Pirimelidae Cheiragonidae Dorippidae Eriphiidae Epialtidae Inachidae Oregoniidae Pilumnidae Geryonidae Portunidae Potamidae Panopeidae Xanthidae Grapsidae Images Name list Publications Sites alex@equator.ru Whole checklist По-русски (in Russian) Porcellanidae Varunidae Camptandriidae Macrophthalmidae Pinnotheridae Hapalogastridae Plagusiidae Far East / North Pacific Black Sea Baltic Sea Freshwater crabs Arctic Ocean Designed and composed by Alex Alyakrinsky, 2011 Pinnotheridae Sakaina yokoyai (Glassell, 1933) = Parapinnixa affinis Yokoya, 1928 Far East / North Pacific Range. Off north coast of Honshu (Mutsu Bay), Peter the Great Gulf (Posyet Bay), off pacific  coast of Iturup Island, off coast of southern Sakhalin (Aniva Bay). [Vassilenko, 1990, p. 84].  Primorye and California. (Parapinnixa affinis). [Vinogradov, 1950, p. 240]. “This species was  recorded from Mutsu Bay early in 1928 by Yokoya; no second specimen of this species has so far  been obtained. (...) Known only from Mutsu Bay.” (Sakaina yokoyai). [Sakai, 1976, p. 579].  Upper sublittoral species, at a depth of 2 to 35 m, in druses of Crenomytilus grayanus and  Modiolus difficilis, rocky and muddy bottoms. [Vassilenko, 1990, p. 84].  Size of carapace. Up to 8 x 13,5 mm (length x width), female; up to 8,5 x 12,2 mm (length x  width), male. [Vassilenko, 1990, p. 84]. 6,3 x 10,1 mm (length x width),  female. [Sakai, 1976, p.  580]. Sakaina yokoyai in species-identification.org