Scolamblyops muehlenhardtae Wittmann, 2024, sp. nov.

• Main Author: Wittmann, Karl J.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2024
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Mysida; Mysidae; Scolamblyops; Scolamblyops muehlenhardtae; Drake Passage; South Shetland Islands; Southern Ocean
• Online Access: https://doi.org/10.5281/zenodo.12206534

Scolamblyops muehlenhardtae sp. nov. urn:lsid:zoobank.org:act: E52C7FCF-C335-468C-ABF5-D50EF34E8649 Figs 45–49 Diagnosis Based on adults of both sexes. Covers all features of generic diagnosis. Carapace anteriorly with very short, obtuse-angled rostrum with rounded apex. Freely projecting portion of rostrum up to ⅒ length of terminal segment of antennular trunk. Sub-quadrate eye rudiments with disto-lateral process narrowing to a blunt apex, no ocular papilla. Median segment of antennal peduncle four times as long as basal segment. Terminal lobe of antennal scale short, not or only slightly projecting beyond apical tooth. Scale extending one third its length beyond antennular trunk. Clypeus with long hastate unpaired process projecting anteriorly between antennulae up to basal third of terminal segment of antennular trunk. Labrum with short, tooth-like, rostral projection. Thoracic sternites 2–8 each with one median process in adult male, none in adult female. Marsupium with three pairs of oostegites. Penes short, stout. Female pleopods increasing in length caudally. Endopods of male pleopods 1–5 with 1, 11, 12, 12–13 and 11 segments, exopods with 13, 13, 13, 13 and 12 segments, respectively; no modified setae. Uropods without spine; exopod extending ⅓ its length beyond telson. Distal ⅚ of telson densely furnished with spines along lateral and terminal margins; transversely truncate terminal margin with pair of minute paramedian spines flanked by 5–6 pairs of large spines continuously increasing in length laterally, no setae. Telson with total of 52–74 spines, no laminae, no setae. Etymology The species name is a noun in genitive singular with feminine ending, dedicated to Ute Mühlenhardt-Siegel (Hamburg) in recognition of her important contributions to peracarid taxonomy and biogeography. Material examined Holotype SOUTHERN OCEAN • 1 ov. ♀ (BL = 20.1 mm, on slides); Drake Passage, N of South Shetland Islands, ANDEEP-I station 114-4; 61°43.54ʹ S, 60°44.20ʹ W to 61°43.54ʹ S, 60°44.55ʹ W; ...