Mimonecteola antarctica Zeidler, 2012, sp. nov.

• Main Author: Zeidler, Wolfgang
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2012
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Amphipoda; Microphasmatidae; Mimonecteola; Mimonecteola antarctica; Amundsen Sea; Antarc*; Antarctica; Elephant Island; Southern Ocean
• Online Access: https://doi.org/10.5281/zenodo.6177661; http://treatment.plazi.org/id/03858792FF8DF366FF1FF9456BB3A798

Mimonecteola antarctica sp. nov. (Figs 1 & 2) Material examined. Holotype . Female 8.0 mm (USNM 1090275); Southern Ocean, Pacific Sector, Amundsen Sea [62°11’– 62°20’S 115°02’– 114°24’W], R/V Eltanin , stn. 901, cruise 11, University of Southern California, 3477– 3678 m, 7 January 1964. Allotype. Male (?) 7.2 mm (USNM 1090274); Southern Ocean, Atlantic Sector, north-west of Elephant Island [60°12’– 60°21’S 59°00’– 59°14’W], R/V Eltanin , stn. 449, cruise 6, University of Southern California, 1610 m, 15 January 1963. Description of holotype (figs 1 & 2). Female, 8.0 mm; immature judging by the under-developed oostegites. Pereon moderately inflated due to enlargement of pereonites 1–4. Head with short, hook-shaped rostrum. Eyes small or barely discernable. Antennae 1 as long as head and first 1.5 pereonites combined (measured medially). Antennae 2 similar in length to antennae 1, with relatively long, slender terminal article. Gnathopod 1; basis marginally shorter than remaining articles combined; carpus and propodus similar in length; propodus oval-shaped with numerous fine setae distally; dactyl relatively straight, length about half propodus. Gnathopod 2; length 1.4 x gnathopod 1; articles relatively more slender but of similar proportions to those of gnathopod 1; propodus with few long setae on margins and distally. Pereopod 3 marginally longer than pereopod 4; basis length almost 2.5 x merus; carpus slightly expanded with several moderate setae on distal margin, length about twice merus; propodus relatively narrow, length 1.4 x carpus; dactyl relatively straight, length slightly more than 0.2 x propodus. Pereopod 4 marginally shorter than pereopod 3 but of similar structure; basis length about twice merus, as long as carpus; propodus length about 1.3 x carpus. Pereopod 5 is relatively feeble compared to other pereopoda, with more slen- der articles except for the propodus; length marginally more than 0.7 x pereopod 4; basis length about twice merus; carpus length about 1.3 x merus; propodus length ...