Gnathostenetroididae Kussakin 1967

• Main Authors: Malyutina, Marina V., L. Bruce, Niel
• Format: Text
• Language: unknown
• Published: Zenodo 2019
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Isopoda; Gnathostenetroididae; Antarctic; The Antarctic; Antarc*
• Online Access: https://dx.doi.org/10.5281/zenodo.5922998; https://zenodo.org/record/5922998

Family Gnathostenetroididae Kussakin, 1967 Diagnosis: Body with subparallel lateral margins, cephalon with rostral projection of varying size; eyes, if present, dorsolaterally rounded, of 3–8 ommatidia. Pleon subequal in size to two posterior pereonites, two pleonites anterior to pleotelson. Pereopods 1–4 inserted anteriorly, bases directed posteriorly; dorsal margin of pereopod articles oriented anteriorly. Pereopods 5–7 inserted posteriorly, bases directed anteriorly; dorsal margin of pereopod articles oriented posteriorly. Pereopods 2–7 dactylus with two strong, subequal claws. Pereopod 1 largest, subchelate, with broad enlarged prododus. Pereopod 1 of male longer and more stout than in female. Penes tubular, inserted from coxae of pereopods 7. Pleopod 1 of male longer than branchial cavity, covering remaining pleopods; protopod short, fused, rami separate, broad, lamellar. Pleopod 2 of male separate, less than half pleopod 1 length, exopod short, stout, inserting distomedially on protopod; copulatory stylet of endopod widening distally to setal fringed structure. Female pleopod 2 fused, covering remaining pleopods. Pleopod 3 endopod with 3 distal plumose setae; exopod elongate, slender. Pleopod 4 biramous, pleopod 5 uniramous. Uropods inserted ventrally adjacent to anus, protopod stout, rami relatively well developed. Anus not covered by pleopods, separated from pleopod chamber by preanal bar. Remarks . The Gnathostenetroididae can be identified and distinguished from the Protojaniridae by the presence of two free (unfused) pleonites, while Protojaniridae is characterized by absence of free pleonites. : Published as part of Malyutina, Marina V. & L. Bruce, Niel, 2019, The first record of Gnathostenetroididea Kussakin, 1967 from Australian waters with description of four new species of Gnathostenetroides Amar, 1957 (Crustacea: Isopoda: Asellota) from the Great Barrier Reef, pp. 301-350 in Zootaxa 4554 (2) on page 304, DOI: 10.11646/zootaxa.4554.2.1, http://zenodo.org/record/2623588 : {"references": ["Kussakin, O. G. (1967) Fauna of Isopoda and Tanaidacea in the coastal zones of the Antarctic and subantarctic water. In: Andriyashev, A. P. & Ushakov, P. V. (Eds.), Biological Reports of the Soviet Antarctic Expedition (1955 - 1958). Akademii Nauk SSSR, Leningrad, pp. 220 - 380."]}