Austroniscus Vanhoffen 1914

• Main Authors: Kaiser, Stefanie, Stransky, Bente, Jennings, Robert M., Kihara, Terue Cristina, Brix, Saskia
• Format: Other/Unknown Material
• Language: unknown
• Published: 2023
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Isopoda; Nannoniscidae; Austroniscus; Arctic; Antarctic; Pacific; Jennings; Antarc*
• Online Access: https://zenodo.org/record/7982561; https://doi.org/10.5281/zenodo.7982561

Austroniscus Vanhöffen, 1914 Synonymy: Nannoniscella Hansen, 1916: 84. Type species: Austroniscus ovalis Vanh ̂ffen, 1914 Diagnosis (modified from Kaiser & Brandt 2007): Body flattened and broadened; pereon and pleotelson expanded laterally in flat, marginal flanges. Pereonites without ventral spines. Rostral crest often well developed. Marginal flanges of pereonites 1–4 anteriorly produced. Antennula with 6 articles (only A. chelus Kaiser & Brandt, 2007, and male of Austroniscus brandtae n. sp. with 7 articles), terminal article unspecialised, not enlarged. Pereopod I somewhat shorter and distally more robust than pereopods II–VII; pereopods V–VII not especially expanded for swimming, with few natatory setae. Pleotelson without posterolateral spines. Operculum rectangular, covering a small part of the pleotelson ventral surface, width less than half pleotelson width, without ventral spines. Uropods hardly projecting above posterior margin, biramous, endo- and exopod almost of same length. Composition: A. acutus Birstein, 1970; A. brandtae Kaiser, Stransky & Brix n. sp., A. chelus Kaiser & Brandt, 2007; A. coronatus Schiecke & Modigh-Tota, 1976; A. groenlandicus (Hansen, 1916); A. karamani Birstein, 1962; A. norbi Svavarsson, 1982; A. obscurus Kaiser & Brandt, 2007; A. ovalis Vanh ̂ffen, 1914; A. rotundatus Vanh ̂ffen, 1914; A. vinogradovi (Gurjanova, 1950). Distribution: Arctic, Antarctic, Atlantic, Mediterranean, and North Pacific oceans, shelf to hadal (Figs 1, 6). Published as part of Kaiser, Stefanie, Stransky, Bente, Jennings, Robert M., Kihara, Terue Cristina & Brix, Saskia, 2023, Combining morphological and mitochondrial DNA data to describe a new species of Austroniscus Vanhöffen, 1914 (Isopoda, Janiroidea, Nannoniscidae) linking abyssal and hadal depths of the Puerto Rico Trench, pp. 401-434 in Zootaxa 5293 (3) on pages 414-415, DOI:10.11646/zootaxa.5293.3.1, http://zenodo.org/record/7961224