Desmocornea Wittmann, 2024, gen. nov.

• Main Author: Wittmann, Karl J.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2024
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Mysida; Mysidae; Desmocornea; Antarc*; Antarctic
• Online Access: https://doi.org/10.5281/zenodo.12206516

Desmocornea gen. nov. urn:lsid:zoobank.org:act: 7A9D3ED7-5555-44F5-93E8-520164BEECE7 Type species Desmocornea subchelata gen. et sp. nov. by monotypy and present designation. Diagnosis Based on adult female. Carapace normal. Bilobate eyes set laterally apart, not connected by membranous integument, no definite eyestalk. Adult eye with incomplete ommatidia (unlike in well-developed eye of juvenile). Lateral third of eyes occupied by lobe containing ommatidia in linear arrangement, together forming self-contained ribbon. Eye with one sensory papilla, no tooth-like non-sensory projection. Antennal peduncle 4-segmented with oblique border between second segment and dorsally overlapping third segment. Antennal scale with small apical segment; mesial margin setose, lateral margin all along bare, scale with large apical tooth; setose apical lobe not reaching tip of this tooth. Mouthparts normal, labrum rostrally rounded. Thoracomeres and pleomeres normal. Thoracic endopod 2 ending in subchela formed by reflexed, strongly elongate dactylus with claw facing carpopropodus. Female with three pairs of well-developed oostegites. Female pleopods reduced to uniramous setose plates with pseudobranchial lobe. Both rami of uropods unsegmented, setose all around. Lateral margins of telson converging laterally, not serrated; no lateral constriction, no terminal incision; lateral margins and transverse terminal margin with spines. Etymology The genus name is a noun with feminine ending, formed by fusion of the Classic Greek ‘δϵσμός’ (‘ribbon’) with the morphological term ‘cornea’ referring to the cornea of the lateral eye lobe forming a self-contained ribbon (Fig. 27B). Published as part of Wittmann, Karl J., 2024, The Mysidae (Crustacea, Mysida) of the ANDEEP I-III expeditions to the Antarctic deep sea with the description of twelve new species, establishment of four new genera and with world-wide keys to the species of Erythropinae and Mysidellinae, pp. 1-180 in European Journal of Taxonomy 940 on page 49, ...