Myersius, Souza-Filho & Serejo, 2014

Souza-Filho, Jesser F. & Serejo, Cristiana S., 2014, On the phylogeny of Ischyroceridae (Amphipoda, Senticaudata, Corophiida), with the description of a new genus and eight new species from deep-sea Brazilian waters, Zoological Journal of the Linnean Society 170 (1), pp. 34-85 : 60

GENUS MYERSIUS GEN. NOV.

Type species

Myersius denticaudatus sp. nov., by monotypy.

Etymology

Named in honour of Dr Alan A. Myers, in recognition of his immense contributions to the systematics of the Corophioidea .

Diagnosis

Antenna 1 subequal to antenna 2; peduncular article 1 long and rectangular; accessory flagellum 2-articulate, article 1 longer than article 2. Mandibular palp well developed and 3-articulate. Eyes absent. Gnathopod 1 carpus shorter than propodus. Gnathopod 2 male subchelate; carpus shorter than propodus. Coxae 1–5 longer than wide and coxae 6 and 7 wider than long. Coxa 4 posterior margin excavated. Coxa 5 with posterodorsal lobe absent. Pereopods 3 and 4 with merus equal in size. Pereopods 5–7 with at least the propodus and dactylus directed anteriorly; dactylus without accessory spines. Pereopod 5 carpus long, subrectangular, and without denticles or spines on a posteroventral margin. Pleosomite without lateral ridges. Pleopods peduncle slender and not expanded. Pleopod 2 inner ramus present, as long as outer ramus. Urosomite 1 without dorsal spines. Uropod 1 peduncle with acute interamal process; outer margin of outer ramus smooth. Uropod 2 biramous; outer margin of ramus smooth with robust setae. Telson longer than wide (triangular), entire and with two subapical spines.

Geographic distribution

South-western Atlantic: Campos Basin, Rio de Janeiro, Brazil.

Remarks

See remarks on Bathyphotis .