Filitanais elongatus Segadilha & Dos Santos & Serejo 2017, sp. nov.

• Main Authors: Segadilha, Juliana L., Dos Santos, Kátia C., Serejo, Cristiana S.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2017
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Tanaidacea; Colletteidae; Filitanais; Filitanais elongatus; Bransfield Strait; Seta; Antarc*; Antarctica
• Online Access: https://zenodo.org/record/3851725; https://doi.org/10.5281/zenodo.3851725

Filitanais elongatus sp. nov. urn:lsid:zoobank.org:act: 2 BB 6 BAF 1- E 2AC-4EA3-8EED-BC62C46F296A Figs 1–3 Diagnosis (based on females) Body about 13 times longer than wide; pereonite 2 four times longer than pereonite 1; pereopod 1–3 carpus with three spiniform setae distally and propodus with one spiniform ventral seta; pereopod 1–6 ischium without seta; pleon about 0.6 times as long as pereon; pleotelson square, as long as wide; uropod as long as pleotelson; uropod exopod longer than first article of endopod. Etymology The specific epithet refers to the long second pereonite, about four times longer than the first pereonite in species of Filitanais. Material examined Holotype ANTARCTICA: ♀, dissected, adult non-ovigerous, length 1.9 mm, Bransfield Strait, station #2, 62º17′33.4″ S, 58º18′12.6″ W, 1.147 m deep, 6 Dec. 2008 (MNRJ 24443). Paratype ANTARCTICA: 1 ♀, adult non-ovigerous, length 1.8 mm, other data as for the holotype (MNRJ 26238). Description BODY (Fig. 2). About 13 times as long as wide. Cephalothorax oval, 1.6 times as long as wide; eyelobes absent. Pereonites 2–6 longer than wide. All pereonites with lateral setae. Pereonite 1 shortest, about 0.6 times longer than wide. Pereonite 2 longest, about 1.8 times as long as wide. Pereonite 3 as long as pereonite 4, about 1.4 times as long as wide. Pereonite 5 slightly longer than pereonite 6, both about 1.3 times as long as wide. Pleon (Fig. 2) long, about 30% of body length. All pleonites sub-equal in size, with first two pleonites slightly longer than others (0.7 and 0.6 times longer than wide). Pleonite 5 with lateral simple seta. Pleotelson square, about as long as wide, with dorsal plate not covering uropods; one pair of lateral and one pair of terminal simple setae. Apex pointed. ANTENNULE (Fig. 2). With four articles, slightly shorter than cephalothorax. Article 1 longest, about 2.3 times as long as wide, with one simple and four penicillate outer setae. Article 2 about 1.4 times as long as wide, one inner distal penicillate seta and one simple ...