Hendrycksopleustes Labay 2021, gen. nov.

• Main Author: Labay, Vjacheslav S.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2021
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Amphipoda; Pleustidae; Hendrycksopleustes; Sakhalin
• Online Access: https://doi.org/10.5281/zenodo.4775557; http://treatment.plazi.org/id/AD4D87CDFFF8863DFF08F8ECFC6CFCAC

Genus Hendrycksopleustes gen. nov. Figures 1l, 2h, n, w, ae, 3h, 4l, 5k, 6–11 Type species. Hendrycksopleustes neimanii sp. nov. Species . Hendrycksopleustes neimanii sp. nov. from the shelf of north-eastern Sakhalin Island (Sea of Okhotsk). Diagnosis . Body strongly carinated dorsally from pereon segment 6 to pleon segment 2, pleon segment 3 with low ridge. Urosome segment 2 not occluded dorsally. Head without anterodorsal crest. Rostrum short. Anterior head lobe subqadrate. Eyes medium, ellipsoid. Antenna 1 much longer than antenna 2; segments 1 and 2 long, without anterodistal peduncular process and with small posterodistal peduncular process; accessory flagellum minute, scalelike. Antenna 2, peduncular segments 4 and 5 long, subequal, with apical setae only. Upper lip notched apically, lobes slightly asymmetric. Lower lip, outer lobes rounded, steeply angular, widely separated by flat inner lobes. Mandible, molar small, conical, with small conical wart at the axis, and with microsetae, without triturating surface; left lacinia mobilis 10-dentate, right lacinia lacking; raker setae 15–16, slender; incisors 8-dentate; palp segment 3 with 12 D setae and with 4 medium length E setae. Maxilla 1, inner plate with 1–2 setae, palp with an apical row of 5–7 stout conical setae and with subapical row of 5–6 thin setae. Maxilla 2, inner plate with long subapical inner marginal seta and with numerous apical setae. Maxilliped, inner plate broadened, with 5 button spineformes setae; outer plate short; palp large, segments 1–3 broadened, segment 4 slender, slightly cirved. Coxal plates 1–4 medium, strongly increasing in depth from 1 to 3. Coxal plate 1 hatched-shaped. Coxal plates 2 and 3 rounded distally. Hind corners of coxae 1–3 each with 2 or 3 small cusps. Coxa 5 and 6 posterolobate. Pereopods 1 and 2 (gnathopods 1 and 2) powerful, similar in form and size, not sexually dimorphic; carpus short, with distinct narrow carpal lobe; propodus long, inflated; palmar margin long, vertical; posterior margin indistinct; ...