Orchomenella minuta (Krøyer 1846)

Orchomene minuta (Kroyer)

Anonyx minutus Krøyer, 1846, pp. 23–30, pp. 42–43.

Orchomenella minuta.—Sars, 1895, pp. 66–67, pl. 24: fig. 1.— Shoemaker, 1930, pp. 12–13.—Stephensen, 1935, pp. 107–109.—Gurjanova, 1962, pp. 154–157, figs. 41–43.

DIAGNOSIS.—Eyes present, ommatidia compact; lateral cephalic lobes sharply pointed; article 1 of antenna 1 about 1.5 times as long as broad, not distinctly keeled dorsally, article 1 of flagellum equal to articles 2–3 of peduncle in length, accessory flagellum 4 +-articulate; epistome broadly rounded and projecting in front of upper lip; coxa 1 unexpanded; coxa 5 with posterior lobe slightly longer than anterior, coxa 6 with elongate posterior lobe; article 5 of gnathopod 1 with rounded, unprojecting posterior lobe half as long as remainder of article, hand scarcely tapering distally, articles 5 and 6 subequal to each other in length, dactyl fitting palm; gnathopod 2 minutely chelate, articles 5–6 equal to each other in width, pereopods 1–2 with locking spines unmodified, normally small; pereopods 3–5 with article 2 symmetrically expanded, posterior lobe extending only to end of article 3, article 5 slightly shorter than article 4 (ratio of 7: 8, counting only anterior edge of article 4); inner ramus of uropod 3 reaching end of article 1 of outer ramus; telson cleft about two-thirds its length; pleonal epimeron 3 posteriorly smooth, minutely sinuous and posteroventral corner slightly extended and sharp; urosomite 1 with weakly rounded dorsal hump.

DISTRIBUTION.—Circumboreal, 4–180 m.

Saguenay Fjord, southern Gaspe waters (Baie des Chaleurs, Gaspe Bay to American, Orphan and Bradelle banks; eastern boundary: eastern Bradelle Valley), downstream part of middle St. Lawrence estuary, Magdalen Islands (from eastern Bradelle valley to the west, as far as Cape North, including the Cape Breton Channel), lower St. Lawrence estuary, Prince Edward Island (from the northern tip of Miscou Island, N.B. to Cape Breton Island south of Cheticamp, including the Northumberland Strait and Georges Bay to the Canso Strait causeway), Laurentian Channel (bathyal zone)(=Honguedo Strait); lower North Shore; Cobscook Bay

bathyal, infralittoral and circalittoral of the Gulf and estuary