Fresnerhynchus crozeti D'Acoz & Degrave 2018, sp. nov.

• Main Authors: D'Acoz, Cédric D'Udekem, Degrave, Sammy
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2018
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Crustacea; Decapoda; Lipkiidae; Fresnerhynchus; Fresnerhynchus crozeti; Archipel Crozet
• Online Access: https://doi.org/10.5281/zenodo.5951569; http://treatment.plazi.org/id/03AE87808E03FF8BFF6AE86EFE42BD4B

Fresnerhynchus crozeti sp. nov. (Figs 2–6) Material examined. 1 female holotype, slope of a seamount situated NW of the Archipel Crozet, ship Ile Bourbon , reference ALC P 295 - 4, station 139, 44.653333333°S 47.9415°E, 1889 m, 24 May 2011, 02:58:00, coll. Eric Vicinati, MNHN-IU-2016-6297. Description. A very large, robust-bodied shrimp with an elongated, narrow rostrum and large prominent eyes (Fig. 2). Carapace (Fig. 3A–B): rostrum long and slender, longer than antennular peduncles and scaphocerite, but exact length not known, as its tip is broken; 14 dorsal movable teeth (5 post-rostral and 9 rostral teeth), close or very close to each other, the most distal one originating near the tip of article 2 of antennular peduncle, no dorsal teeth beyond this level (in the preserved part of rostrum); ventral border of rostrum with 16 (in preserved part of rostrum) well-developed styliform immovable teeth separate from each other by narrow slit; antennal spine present and large; pterygostomial spine well developed; supra-orbital, branchiostegal and hepatic spines absent; carapace posterodorsally not carinate behind post-rostral teeth; hepatic pit present, very distinct; long, faint and very blunt lateral carina behind hepatic pit. Sternum (Fig. 3C): sternal surface between pereiopods very uneven, not forming a sternal plate. Pleonites (Figs 2, 3A, 3D): dorsally not carinate, not produced posteriorly; posterodorsal border of pleonites 3–4 very minutely serrate; pleura 1–3 rounded; pleuron 4 ventrally nearly straight and posteriorly rounded, with confluence of borders forming blunt right angle; pleuron 5 posteroventrally produced into tooth and with welldeveloped tooth on anterior 0.3 of posterior border; pleonite 6 posterolaterally produced into tooth. Telson (Fig. 3D–F): long and narrow, with median groove, equal in length to uropods, laterally spinose on distal 0.6 (with 7 spines on left side and 6 on right side), apically obtusely triangular, with median blunt protrusion (adorned with setae), with 3 pairs of stout ...