Anomopsyllus geminus Kim & Sikorski & O'Reilly & Boxshall 2013, n. sp.

• Main Authors: Kim, Il-Hoi, Sikorski, Andrey, O'Reilly, Myles, Boxshall, Geoff A.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2013
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Hexanauplia; Cyclopoida; Nereicolidae; Anomopsyllus; Anomopsyllus geminus; Sandnessjøen
• Online Access: https://doi.org/10.5281/zenodo.5266646; http://treatment.plazi.org/id/F473E52C1C69BB59059FFF532799ED69

Anomopsyllus geminus n. sp. Type material: Holotype ♀ (dissected and mounted on a glass slide) from Ampharete cf. lindstroemi Sandnessjøen, Lille Åsvaer (66.235ºN, 12.3374ºE), depth 45 m; Stn LA 2-B, 2007; BMNH Reg. No. 2012.1396. Paratype ♀ (dissected and mounted on glass slide) attached to abdomen of Ampharete lindstroemi northern North Sea, Stn BYA03a F2 (59 o 30.49’N, 01 o 29.16’E.), depth 112 m, collected by P. Garwood, 24 August 2006; BMNH Reg. No. 2012.1397. Female (holotype). Body (Fig. 27A) consisting of cephalosome, inflated trunk, and small urosome. Body length 1.21 mm, excluding caudal setae. Cephalosome subcircular, 200×250 µm, with short anterodorsal ridge and transparent membranous flange along frontal margin. Trunk flattened, 850×539 µm, with slightly undulating, convex lateral margins and truncate posterior margin. Urosome (Fig. 27B) consisting of genital complex and 1- segmented abdomen. Genital complex 110×215 µm, much wider than long, with large dorsal hump (Fig. 27A); genital apertures located ventrolaterally (Fig. 27B). Abdomen much narrower than genital complex, indistinctly articulated from genital complex, and 92×96 µm. Caudal ramus 48×23 µm (ratio 2.09:1), with 6 setae, midterminal seta much larger than other 5, 135 µm long. Rostrum absent. Antennule (Fig. 27C) 123 µm long and indistinctly 5-segmented, with armature formula 6, 3, 2, 2+aesthetasc, and 7+aesthetasc; first segment slightly produced in middle of anterior margin. Antenna (Fig. 27D) 3-segmented; first segment unarmed; second segment with 1 medial seta; third segment 29×12 µm, with 3 medial and 5 distal setae, one distinctly smaller than other 4. Labrum (Fig. 27E) with concave posterior margin and stout posteromedian process. Mandible (Fig. 27F) with 2 hook-like distal processes and 1 proximal seta representing palp. Maxillule (Fig. 27G) lobate, with 3 thick distal setae (1 medial and 2 outer). Maxilla (Fig. 27H) 2-segmented; both segments unarmed but distal segment with spinulose pad on expanded distal surface. Maxilliped ...