Tumidochelia uncinata

• Main Authors: Esquete, Patricia, Cunha, Marina R.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2018
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Tanaidacea; Colletteidae; Tumidochelia; Tumidochelia uncinata; Davis Strait
• Online Access: https://zenodo.org/record/6489412; https://doi.org/10.5281/zenodo.6489412

Tumidochelia uncinata (Hansen, 1913) (Figs 4–5) Leptognathia uncinata HANSeN 1913: 83–85, PL.VIII, FIGS 4A– 4I. Tumidochelia uncinata LARSeN & ShIMOMURA 2007: 7–8. Remarks. Tumidochelia uncinata was described by Hansen, (1913) based on specimens from the Ingolf Expedition, including a few illustrations. After comparing our specimens with the type material, we found no significant differences. Here we illustrate and describe the material from the GoC and HCR to complement previous works. Material examined. Horseshoe Continental Rise—Mud volcanoes. M. Ivanov MV: station M86-5_329, USNEL boxcore, 0 1.03.2012, 35°44.338'N, 10°12.056'W, 4492 m depth, crater of MV; mud breccia covered by hemipelagic sediments, two neuters, dissected (DBUA0002217.01); station. M86-5_348, USNEL boxcore, 0 5.03.2012, 35°44.410'N, 10°12.179'W, 4497 m, mud breccia covered by hemipelagic sediments, one ♀, dissected (DBUA0002217.02). Tiamat MV: station M86-5_339, USNEL boxcore, 0 3.03.2012, 35°45.712'N, 10°21.248'W, 4551 m, crater of MV; mud breccia covered by hemipelagic sediments, one ♀(DBUA0002217.03). All coll. MRC. Additional material examined: Holotype —♀ (ZMUC-CRU-8518), Ingolf expedition, station 36, Davis Strait, 61°50’N, 56°21’W, 2702 m depth. Paratype– juvenile (ZMUC-CRU-9275), Ingolf Expedition, station 103, 66°23’N, 8°52’W, 1090 m depth. Diagnosis. (Female). Pereonites 2–4 about as long as wide. Pleotelson about as long as pleonites 3–5 together. Antenna article 4 with fusion line. Pereopod 1 merus and carpus spines not significantly longer than merus; dactylus and unguis together about half length of propodus. Uropod exopod shorter than endopod first segment. Description of female DBUA 0002217.02. Body (Fig. 4A, B) 6.5 times as long as broad, length 1.5 mm. Cephalothorax 1.2 times as long as broad, 0.9 times as long as first two pereonites. Pereonite 6 the shortest, about half as long as other pereonites. Pleon shorter than last two pereonites together, all pleonites alike. Pleotelson as long as three pleonites, distally ...