Austroniscus obscurus Kaiser & Brandt, 2007, sp. nov. ...

• Main Authors: Kaiser, Stefanie, Brandt, Angelika
• Format: Text
• Language: unknown
• Published: Zenodo 2007
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Isopoda; Nannoniscidae; Austroniscus; Austroniscus obscurus; Antarc*; Antarctic; Weddell Sea
• Online Access: https://dx.doi.org/10.5281/zenodo.5688738; https://zenodo.org/doi/10.5281/zenodo.5688738

Austroniscus obscurus sp. nov. (Figs 6–9) Material examined Holotype: 1 Ψ (adult, 1.9 mm), eastern Weddell Sea, 71°18.61`S, 013°56.12`E – 71°18.73`S, 013°56.12`E, PS ANT XXI/2, Station 232–1, 910– 899.6 m, ZMH K–40994. Paratypes: 3 Ψ (2 preparatory, 1 damaged), ZMH K–40995, 1 Ψ (SEM specimen), preparatory, ZMH K– 40996, same station as holotype. Diagnosis Pereonite 1 strongly frontally directed, with a spine­like appendix inserting ventrally, tipped with a small spine and almost reaching anterior margin of the cephalothorax. Posterior half of cephalothorax half covered by pereonites 1–2. Incisor of right mandible with 6 teeth, left mandible with 5 teeth. Lacinia mobilis with 3 teeth. Unguii of pereopods 5 and 7 with 1–2 robust ventral spines proximally. Description Habitus of female holotype (Figs 6 A, 9A–B) similar to A. chelus sp. nov. Antennula length (Fig. 6 B) 0.2 times body length, with 6 articles. Article 1 broad, 1.4 times longer than wide, with 3 broom setae (one broken off) and 3 slender simple ... : Published as part of Kaiser, Stefanie & Brandt, Angelika, 2007, Two new species of the genus Austroniscus Vanhoeffen, 1914 (Isopoda: Asellota: Nannoniscidae) from the Antarctic shelf, pp. 47-68 in Zootaxa 1394 on pages 58-64, DOI: 10.5281/zenodo.175318 ...