Metopelloides Gurjanova, 1938

Ariyama, Hiroyuki & Moritaki, Takeya, 2023, Two New Amphipods Associated with a Hermit Crab from the Kumano-nada, Central Japan (Crustacea: Amphipoda: Isaeidae, Stenothoidae), Records of the Australian Museum (Rec. Aust. Mus.) 75 (4), pp. 357-370 : 358

Genus Metopelloides Gurjanova, 1938

[Japanese name: Yadokari-tatesokoebi-zoku, new]

Metopelloides Gurjanova, 1938: 281 , 390.— Gurjanova, 1951: 454.— Barnard & Karaman, 1991b: 693.— Lowry & Myers, 2017: 53.

Type species. Metopella micropalpa Shoemaker, 1930 , original designation.

Diagnosis. Antenna l peduncle lacking nasiform process on article 1; accessory flagellum absent or vestigial. Mandibular palp l-articulate; palp of maxilla 1 1-articulate; inner plates of maxillipeds partially fused together. Coxa 1 very small, coxae 2–4 enlarged, coxae 5–7 small. Gnathopod 1 small, subchelate; carpus not lobate; propodus subequal to carpus in length, palm oblique. Gnathopod 2 enlarged, subchelate; carpus short, lobate; propodus broad, palm oblique or transverse. Pereopods 3–7 prehensile, bases rectolinear. Pleonite 3 and urosomite 1 lacking dorsal process, urosomites 1–3 free. Uropods 1, 2 biramous; uropod 3 uniramous, ramus 2-articulate. Telson flat, entire.

Included species. Metopelloides lowryi sp. nov. [Northwest Pacific]; M. micropalpa ( Shoemaker, 1930) [Northwest Atlantic]; M. paguri Marin & Sinelnikov, 2012 [Sea of Okhotsk and Sea of Japan]; M. stephenseni Gurjanova, 1938 [Sea of Japan] and M. tattersalli Gurjanova, 1938 [Sea of Japan].

Remarks. Shoemaker (1955) also recorded M. stephenseni and M. tattersalli from the Arctic Ocean; however, his M. stephenseni is probably M. micropalpa because of the high degree of similarity between them.