Fissarcturus BATHYWEDDELLENSIS 2007, SP. NOV.

• Main Author: Brandt, Angelika
• Format: Other/Unknown Material
• Language: unknown
• Published: 2007
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Isopoda; Antarcturidae; Fissarcturus; Elephant Island; South Shetland Islands; Southern Ocean; Weddell; Weddell Sea; Antarc*
• Online Access: https://zenodo.org/record/5114007; https://doi.org/10.5281/zenodo.5114007

FISSARCTURUS BATHYWEDDELLENSIS SP. NOV. (FIGS 1–10) Material examined: holotype, male (9 mm), station ANDEEP 133-3-E, 65°20.17′−20.08′S, 54°14.30′−34′W, 1121 m, north-western Weddell Sea, 7 February 2002, RV Polarstern (ZMH K−40890). Paratype: female (7.8 mm), station ANDEEP 133-3, station data as holotype (ZMH K-40891); male (9 mm), station ANDEEP 41-3-E, 59°22.24′−22.57′S, 60°04.06′−34′W, 1121 m, off Elephant Island, 26 January 2002, RV Polarstern (ZMH K-40892); 5 manca I stages, station ANDEEP 46-7-E, 60°38.33′−06′S, 53°57.38′−51′W, 3894 m, 30 January 2002, RV Polarstern (ZMH K-40893). Distribution: South Shetland Islands, Weddell Sea, Southern Ocean. Etymology: The species name is derived from Latin bathy-, which means ‘deep’ and refers to the depth and location of the type locality in the Weddell Sea. The gender is masculine. Diagnosis: Dorsal pereonal spination with elements in submedial, dorsolateral, lateral and coxal rows, dorsal spines smooth, anterior ones long, prominent, spines on posterior pereonites and on pleotelson shorter, blunt. Proximal last lateral pair of spines inserted almost at caudal tip, at 98% of the pleotelson length. Minute pleotelsonic apex. Description of the holotype male: Body length 9 mm (Fig. 1). Eye large, oval. Eye 0.4 of lateral length of head. Preocular spine long, acuminating, blunt, almost as long as supraocular spine. Supraocular spine blunt, long, directed frontally, slightly more than twice as long as diameter of eye. Second cephalic spine broken off in male. Two lateral smaller spines on head in male. Body long, slender (Fig. 1), pereonites 1–4 of about same length, pereonites 1–3 widest. Pereonite 4 about as wide as pereonites 5–7. All pleonites fused with pleotelson. Pereonal spination comprising elements in submedial, dorsolateral, lateral and coxal rows. Submedial and dorsolateral spines present on pereonites 1–4, submedial spines on pereonites 5–7 similar to 1–4, but smaller than on 1–4. Submedial, dorsolateral and lateral spines present on pereonites 1–7, ...