Fissarcturus ROSSI 2007, SP. NOV.

• Main Author: Brandt, Angelika
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2007
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Isopoda; Antarcturidae; Fissarcturus; Antarc*; Ross Sea
• Online Access: https://doi.org/10.5281/zenodo.5113991; http://treatment.plazi.org/id/B815878EFFFDFFFBFF62237D292EC4E7

FISSARCTURUS ROSSI SP. NOV. (FIGS 21–23) Material examined: Holotype, female (10.5 mm), station, 74°20′S, 179°55′W, 205–220 m, Pennell Bank, Ross Sea, 8 February 1960, New Zealand Oceanographic NIWA 3926. Distribution: Only known from type locality. Etymology: The species name is derived from the name of the type locality, the Ross Sea. The gender is masculine. Diagnosis: Pereonal spination comprising elements in submedial, dorsolateral, lateral and coxal rows, spines of F. rossi are covered with spinules; most posterior lateral spines are positioned 100% at the caudal tip, and the pleotelson apex straight, not extended caudally. Description of the holotype male: Body length 10.5 mm. Eye rounded, 0.3 times lateral length of head. Preocular spine present, small, acute. Supraocular spine long, twice as long as diameter of eye, denticulated. Second cephalic spine slightly longer than supraocular spine, denticulated. Other spines on head, six additional ones on caudal margin. Body long, slender (Fig. 21), except for the anterior pereonites, which are laterally slightly widened. Pereonites 1–4 of about same length, pereonites 1–4 widest. Pereonite 3 widest, pereonites 5–7 slightly acuminating. Pereonal spination comprising elements in submedial, dorsolateral, lateral and coxal rows. Submedial and dorsolateral spines present on pereonites 1–4. Submedial spines also present on pereonites 5–7 similar to 1– 4, all long, denticulate, longest in pereonite 3, then slightly decreasing in length from 4 to 7, two pairs present on pereonites 2–4. Two pairs of long, denticulate dorsolateral spines present on pereonites 1–7, but lightly shorter than submedial ones, present on segments, longest on pereonite 3, then slightly decreasing in length from 4 to 7. Lateral spines present on pereonites 1–7, all much shorter and smaller than dorsolateral ones, denticulate, three pairs present on pereonites 5–6, two pairs on 7. Coxal spines present on 1–7, all long, denticulate, four on pereonite 1, erect in the female, longest on pereonite ...