Epimeria (Hoplepimeria) cyphorachis d'Acoz & Verheye 2017, subgen. et sp. nov.

• Published in: The Cryosphere
• Main Authors: d'Acoz, Cédric d'Udekem, Verheye, Marie L.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2017
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Amphipoda; Epimeriidae; Epimeria; Epimeria cyphorachis; Southern Ocean; Drake Passage; Livingstone; Livingstone Island
• Online Access: https://zenodo.org/record/3857578; https://doi.org/10.5281/zenodo.3857578

Epimeria (Hoplepimeria) cyphorachis subgen. et sp. nov. urn:lsid:zoobank.org:act: 5A5D8439-3793-4124-A65B-C6EB65A1587E Figs 138–144 Epimeria georgiana Clade A – Lörz et al. 2011: 1, fig. 1 (triangle), 3, 4, 5, 12.4, 12.5, 12.6, 13 row 1, 14A, 14B, table 3. Epimeria georgiana – Rauschert & Arntz 2015: 61, pl. 54, unnumbered photograph. ‘Clade E georgiana-rimicarinata-rubriequies [sic] complex - GE3’ – Verheye et al. 2016a, supplement: 4 (online). Etymology From the Greek, κυφός, humpbacked; ραχις, spine, spinal column. The name, which is a noun in apposition, alludes to the humpbacked silhouette of the species. Type material Holotype RV Polarstern cruises: SOUTHERN OCEAN: ♀, cruise PS81, ANT-XXIX/3, stn. 249-2, Drake Passage, north of Livingstone Island, 61°56.05ʹ S, 60°5.56ʹ W to 61°56.21ʹ S, 60°5.80ʹ W, 413–421 m, mud, Agassiz trawl, 12 Mar. 2013 (RBINS, INV. 122936) [extraction K25; Genbank nr, COI: KU870859, 28S: KU759637]. Description ROSTRUM. Medium-sized, overreaching tip of article 1 of peduncle of antenna 1, anteriorly weakly curved, ventrally straight, acute in lateral view; broad and with weakly curved converging borders in frontal view. EYE. Very large, broadly elliptic. PEREION–PLEOSOME TOOTH PATTERN. Pereionites 1–3 smooth, pereionites 4 to pleonite 3 with extremely low and extremely blunt mid-dorsal carina; profile of carina of pereionite 4 inconspicuously curved; profile of carinae of pereionites 5 to pleonites 3 straight, those of pleonite 2 with inconspicuous concavity; profile of carina of pleonite 3 straight with anterior low very protrusion followed by shallow notch, then nearly straight, posteriorly blunt; dorsolateral ornamentation absent. COXAE 1–3. Weakly carinate and distally subacute to narrowly blunt-tipped. COXA 4. Anterodorsal border nearly straight (very slightly concave), anteroventral border very weakly concave, these two borders being joined by a very large rounded lobe (anterior corner), which is weakly projecting forward; ventral corner forming a sharp squared angle ...