Lepechinella huaco J. L. Barnard 1973

“Lepechinella huaco, new species

Diagnosis—Anterior teeth obsolescent, pereonite 1 with one definite anterior dorsal tooth, pereonites 2-4 lacking teeth, pereonite 5 to pleonite 4 with one sharp tooth, posterior teeth about half length of coxa 2, accessory teeth absent but pleonite 4 with small spinose hump anterior to main tooth; body with sparse dorsal setae; epimera 1—3 posteriorly convex, each with posteroventral tooth, small on epimera 1 and 3, medium on epimeron 2, latter with row of lateral setae; rostrum thin and of medium thickness, extending along 33 percent of article 1 on antenna 1, first cephalic tooth 75 percent length of rostrum, second tooth about half length of rostrum; mandibular palp article 3 about twice as long as article 1, article 2 about twice as long as article 3, articles elongate; coxa 1 weakly slipper-shaped, not bifid, coxae 2-4 with anterior bulge, coxa 2 evenly tapering, subtruncate, coxa 3 bifid, limbs soft, posterior slightly the shorter, coxa 4 evenly and softly bifid, coxa 5 with anterior lobe as long as coxa 4, coxa 6 with weak and rounded anterior lobe, coxa 7 with sharp, slightly extended posteroventral corner; accessory flagellum elongate, I-articulate; telson cleft nearly halfway, each lobe with long apical spine and two long lateral setae on each side; inner ramus of uropod 1 extending 07 percent along outer ramus; outer ramus of uropod 2 slightly shorter than inner ramus; inner ramus of uropod 3 extending 90 percent along outer ramus.

Description—Flagellum of antenna 1 slightly shorter than peduncular articles 1-5 of antenna 2, flagellum of antenna 2 slightly longer than peduncle of antenna 1; mouthparts like those figured for Lepechinella occlo, new species, but mandibular palp longer and thinner, inner plate of maxilla 1 with 2 or 3 setae, inner plate of maxilla 2 slightly thinner, outer plate of maxilliped with 13 spines and setae, with 6 stout spines on medial edge; outer ramus of uropod 3 with second article.

Holotype-USNM 139128, female, 8.6 mm.

Type-locality—Eltanin 350, Drake Passage, 55°00'S, 58°57'W, 2452 m, 4 December, 1962.

Material—Three specimens from the type-locality.”

(Barnard, 1973: 12-14)

Lepechinella huaco

DIAGNOSIS.–Anterior teeth obsolescent, pereonite 1 with one definite anterior dorsal tooth, pereonites 2–4 lacking teeth, pereonite 5 to pleonite 4 with one sharp tooth, posterior teeth about half length of coxa 2, accessory teeth absent but pleonite 4 with small spinose hump anterior to main tooth; body with sparse dorsal setae; epimera 1–3 posteriorly convex, each with posteroventral tooth, small on epimera 1 and 3, medium on epimeron 2, latter with row of lateral setae; rostrum thin and of medium thickness, extending along 33 percent of article 1 on antenna 1, first cephalic tooth 75 percent length of rostrum, second tooth about half length of rostrum; mandibular palp article 3 about twice as long as article 1, article 2 about twice as long as article 3, articles elongate; coxa 1 weakly slipper-shaped, not bifid, coxae 2–4 with anterior bulge, coxa 2 evenly tapering, subtruncate, coxa 3 bifid, limbs soft, posterior slightly the shorter, coxa 4 evenly and softly bifid, coxa 5 with anterior lobe as long as coxa 4, coxa 6 with weak and rounded anterior lobe, coxa 7 with sharp, slightly extended posteroventral corner; accessory flagellum elongate, 1–articulate; telson cleft nearly halfway, each lobe with long apical spine and two long lateral setae on each side; inner ramus of uropod 1 extending 67 percent along outer ramus; outer ramus of uropod 2 slightly shorter than inner ramus; inner ramus of uropod 3 extending 90 percent along outer ramus.

DESCRIPTION.–Flagellum of antenna 1 slightly shorter than peduncular articles 4–5 of antenna 2, flagellum of antenna 2 slightly longer than peduncle of antenna 1; mouthparts like those figured for Lepechinella occlo, new species, but mandibular palp longer and thinner, inner plate of maxilla 1 with 2 or 3 setae, inner plate of maxilla 2 slightly thinner, outer plate of maxilliped with 13 spines and setae, with 6 stout spines on medial edge; outer ramus of uropod 3 with second article.

HOLOTYPE.–USNM 139128, female, 8.6 mm.

TYPE-LOCALITY.–Eltanin 350, Drake Passage, 55°00′S, 58°57′W, 2452 m, 4 December, 1962.

MATERIAL.–Three specimens from the type-locality.