Acanthocope eleganta Malyutina & Brandt, 2004, sp. nov.

• Main Authors: Malyutina, Marina, Brandt, Angelika
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2004
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Isopoda; Munnopsidae; Acanthocope; Acanthocope eleganta; Elephant Island; Weddell Sea
• Online Access: https://doi.org/10.5281/zenodo.6272064; http://treatment.plazi.org/id/038CC302FFF97D18FED33C2C69BEFD46

Acanthocope eleganta sp. nov. (Figs 2–5) Material examined: holotype, Ψ manca, stage 3 (5.9 mm), ANDEEP stn. 131–9, 65°18.55’S, 51°31.95’W, 2893–2894 m, northwest Weddell Sea, 6 March 2002, RV Polarstern (ZMH K–40716). Paratypes: 2 Ψ manca, stage 1 (2.9 and 2.7 mm), ANDEEP stn. 114—S, 61°43.54– 51’S, 60°44.21–43’W, 4482 m, northwest off Elephant Island, 17 February 2002, RV Polarstern (ZMH K–40717); Ψ manca, stage 1 (2.5 mm), anterior part of manca, ANDEEP stn. 42–S, 59°40.30–32'S, 57°35.42–64’W, 3689 m, 27 January 2002, RV Polarstern (ZMH K–40718). Diagnosis: Coxal spine of pereopods 2–4 with broad base, slender, about as long as half width of pereonite; natasome about 4 times as long as anterior part of body; at least pereonites 5 and 6 with a pair of short anterodorsal spines and a long ventromedial spine each, anterolateral spines of pereonites 5 and 6 as long as and about twice as wide as coxal spines of pereopods 2–4 and twice as long as pereonites laterally; posterolateral spines of pleotelson slightly longer than anterolateral ones, curved, directed posteriorly, lateral margin in between lateral spines angular; terminal spine at least 0.6 times as long as pleotelson; preanal ventral process with short distolateral projections; uropod about half as long as terminal spine of pleotelson. Description of the holotype: Body (Fig. 2) 2.6 times as long as wide (greatest width of pereonite 5 with lateral spines), dorsal surface granulated, all lateral margins of body and spines with elongate transparent scale spinules, all body spines, especially terminal one with long setae; head 0.5 times as long as wide, with dorsal spinules and tubercles, lateral margins in dorsal view slightly convex, with spinule row; frontal margin sloping, smooth; interantennular distance 0.4 times as wide as head and twice as wide as antenna 1 basally, with serrated lateral margins. Pereonite 1 0.9 times as wide as head; pereonites 1–4 slightly broadening and elongating from 1 to 4, pereonites 1 and 2 subequal in length, pereonite 4 ...