Chauliopleona hastata

• Published in: PLoS Neglected Tropical Diseases
• Main Author: Bird, Graham John
• Format: Other/Unknown Material
• Language: unknown
• Published: 2015
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Tanaidacea; Akanthophoreidae; Chauliopleona; Chauliopleona hastata; Leptognathia; Leptognathia hastata; Arctic; Irminger Basin; Norwegian Sea; Seta; Northeast Atlantic
• Online Access: https://zenodo.org/record/4329687; https://doi.org/10.5281/zenodo.4329687

Chauliopleona hastata (Hansen, 1913) (Figures 1H–M, 11–13, 17A, 18) Leptognathia hastata Hansen, 1913: 79–80, pl. VII figs. 7a–g Leptognathia hastata: Nierstrasz 1913: 30; Stephensen 1932: 348; else, see Sieg 1983 Chauliopleona hastata: Guerrero-Kommritz 2005: 1191–1195, figs. 7–8; else, see Anderson 2013 Diagnosis Cephalothorax 1.2 times ltb. Pereonites all shorter than broad; with parallel or weakly convex lateral margins. Pleon shorter than cephalothorax, pleonites 1–4 sternite without prominent sternal process. Antennule article-1 as long as rest of antennule. Maxilliped basis with long seta. Cheliped merus without inferior protuberance; carpus stout, 1.6 times ltb, inferior shield deep (aspect ratio ≈ 0.36–0.4), rounded, distal margin not angular; fixed finger with four teeth; dactylus superior margin smooth. Pereopods 1–3 basis margins smooth; carpus and propodus inferior spinules weak. Pereopod-1 dactylus and unguis short, about 2/3 length of propodus. Pereopods 2–3 carpus without distomedial seta. Pereopods 4–6 ischium with two short setae. Uropod endopod pereonites 1–2), a small protuberance/apophysis on the cheliped merus and fewer pleopodal setae. Chauliopleona hastata is a cold-water species with an overall recorded depth range of 400–3709 m, i.e. it is primarily characteristic of the Arctic area of the Norwegian Sea, but there is a single, possibly spurious, record from the West Shetland Slope at 400 m (SEA-4 Stn 57075#1). The record of a preparatory male from the Irminger Basin (BIOICE Stn 3187) also looks anomalous but the specimen appears to have characters consistent with C. hastata, such as its robust cheliped (Figure 17A). Published as part of Bird, Graham John, 2015, Tanaidacea (Crustacea: Peracarida) of the northeast Atlantic: Chauliopleona Dojiri and Sieg, 1997 and Saurotipleona n. gen. from the ' Atlantic Margin', pp. 1507-1547 in Journal of Natural History 49 (25) on pages 1530-1535, DOI:10.1080/00222933.2015.1005715, http://zenodo.org/record/3999694