Mysidetes undetermined

• Main Author: Wittmann, Karl J.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2024
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Mysida; Mysidae; Mysidetes; Mysidetes undetermined; Anvers Island; Bellingshausen Sea; Montagu Island; South Orkney Islands; Southern Ocean; Weddell Sea
• Online Access: https://doi.org/10.5281/zenodo.12774314; http://treatment.plazi.org/id/EF7B8639FFA8FFC8FD03028CFBBB22F8

Mysidetes sp. M nec Mysidetes sp. – Wittmann et al. 1993:32. — Wittmann 1995: fig. 1c. Material examined SOUTHERN OCEAN • 1 imm. (BL = 8.7 mm); South Sandwich Trench, SE of Montagu Island, ANDEEP-II station 143-1; 58°44.69ʹ S, 25°10.27ʹ W to 58°44.49ʹ S, 25°10.47ʹ W; depth 773.9– 755.6 m; 25 Mar. 2002; EBS supranet • 1 ♀ subad. (BL = 14.1 mm); NW Weddell Sea, ANDEEP-II station 133-3; 65°20.15ʹ S, 54°14.35ʹ W to 65°20.06ʹ S, 54°14.51ʹ W; depth 1122– 1119 m; 7 Mar. 2002; EBS epinet • 2 juv., SE Weddell Sea, ANDEEP-III station 074-6; 71°18.35ʹ S, 13°57.71ʹ W to 71°18.28ʹ S, 13°57.31ʹ W; depth 1030–1040 m; 20 Feb. 2005; EBS epinet • 1 imm. (BL = 5.3 mm); eastern Weddell Slope, Kapp Norvegia, ANDEEP-III station 078-10; 71°09.39ʹ S, 13°59.30ʹ W to 71°09.36ʹ S, 13°58.81ʹ W; depth 2156– 2147 m; 21 Feb. 2005; EBS epinet • 1 ♀ subad. (BL = 16.4 mm), 6 juv. (BL = 4.1–5.9 mm); Powell Basin, SW continental slope of South Orkney Islands, ANDEEP-III station 150-6; 61°48.70ʹ S, 47°28.04ʹ W to 61°48.57ʹ S, 47°28.19ʹ W; depth 1996– 1993 m; 20 Mar. 2005; EBS epinet • 1 ♀ subad. (BL = 16.1 mm); same collection data as for preceding except for occurrence in supranet • 1 ♂ ad. (BL = 20.5 mm), 1 imm. (BL = 9.6 mm); Bellingshausen Sea, NW of Anvers Island, ANDEEP-III station 153-7; 63°19.31ʹ S, 64°36.94ʹ W to 63°19.15ʹ S, 64°37.18ʹ W; depth 2092–2118 m; 29 Mar. 2005; EBS supranet. Distribution Widely distributed in the areas covered by the ANDEEP II–III expeditions: SE Weddell Sea, eastern Weddell Slope, NW Weddell Sea, Powell Basin, Bellingshausen Sea, South Sandwich Trench; total ranges 59– 71° S, 14– 65° W, depth 774–2147 m. The lower depth range significantly exceeds the maximum depth of 1105 m previously known for species of Mysidetes at a worldwide scale (Wittmann & Chevaldonné 2021). Remarks The ANDEEP specimens closely approach the first description of Mysidetes macrops O.S. Tattersall, 1955, and the respective features given in the worldwide key to Mysidetes species by Wittmann & Chevaldonné (2021). However, the ANDEEP ...