Desmocornea subchelata Wittmann, 2024, gen. et sp. nov.

• Main Author: Wittmann, Karl J.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2024
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Mysida; Mysidae; Desmocornea; Desmocornea subchelata; Southern Ocean
• Online Access: https://doi.org/10.5281/zenodo.12774296

Desmocornea subchelata gen. et sp. nov. urn:lsid:zoobank.org:act: 3B26DF92-6C03-4CC6-A5FE-0097382D8D57 Figs 25–30 Diagnosis Based on adult female. All features as in generic diagnosis. Eyes bilobate, differentiated in a bulbous, dorsoventrally flattened mesial lobe and a smaller, roughly calotte-shaped lateral lobe. Eyestalk fused only with mesial lobe. Reduced ommatidia of mesial lobe face centripetally; modified, in some way functional ommatidia of lateral lobe face laterally, tightly set in parallel orientation, together forming self-contained ribbon. One large tooth close to acute disto-lateral edge of antennal sympod. Antennal scale extends 0.6 times its length beyond antennular trunk and 0.3–0.4 times beyond antennal peduncle. Total scale length three times maximum width; its disto-lateral tooth mesially closely accompanied by two short spines. Thoracic exopod 1 with 9-segmented flagellum, exopods 2, 5–6 and 8 with 10-segmented flagellum (exopods 3–4 and 7 broken). Carpopropodus 2 weakly elongate, longer than merus; reflexed dactylus strongly elongate,> 4 times as long as wide, claw stout and short, ⅖ as long as dactylus. Endopod of uropods with one small slender spine close to mesial margin below statocyst. Telson trapeziform, length 1.7 times maximum width; distal half with continuously converging lateral margins. Proximal 45% of lateral margins without spines, distally remaining portion with about 13–14 normal-shaped spines increasing in length caudally. Transversely truncate terminal margin with very shallow median indentation lined with pair of setae flanked by pair of minute spines; indentation in turn flanked by two pairs of large latero-terminal spines, submedian spines largest, measuring about ¼ of telson length. Telson with total of ≈33 spines and two setae. Etymology The species name is a Latinized adjective with feminine ending, referring to the subchelate second thoracic endopod. Material examined Holotype SOUTHERN OCEAN • 1 ♀ ad. (BL = 18.5 mm, on slides); ...