Zatsepinia rittichae Jirkov 1986

• Main Authors: Imajima, Minoru, Reuscher, Michael G., Fiege, Dieter
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2013
• Subjects: Biodiversity; Taxonomy; Animalia; Annelida; Polychaeta; Terebellida; Ampharetidae; Zatsepinia; Zatsepinia rittichae; Northern Norway
• Online Access: https://doi.org/10.5281/zenodo.5698333; http://treatment.plazi.org/id/03C687A0FFE3FF9BFF35FF4CFC8CA43E

Zatsepinia rittichae Jirkov, 1986 (Figs. 15 A–K; 17F) Zatsepinia rittichae Jirkov, 1986: 289 –290, 1 fig.—Jirkov 2008: 120, tab. 1 Specimens examined. Off Kushiro, Hokkaido, 42°34.99'N, 144°48.02'E – 42°34.68'N, 144°49.91'E, 1028–1075 m, KT-07-29, St. K-1, 11.2007 (2cs, 3af); SMF 21696, 42°27.63'N, 144°57.44'E – 42°27.57'N, 144°59.38'E, 2025– 2037 m, KT-07-29, St. K-3, 11.2007 (6cs, 5af). Off Cape Erimo, Hokkaido, 41°43.00'N, 143°56.37'E – 41°44.53'N, 143°56.46'E, 1008–1031 m, KT-07-29, St. E-1, 11.2007 (7af). Off Hachinohe, 40°00.00'N, 143°31.37'E – 41°00.76'N, 143°30.25'E, 2032–2055 m, KT-07-29, St. H-2, 11.2007 (3cs, 1af). Sagami Bay, 35°09.2'N, 139°22.4'E – 35°09.7'N, 139°22.2'E, 500–520 m, KT-66-12, St. 2, 6.1966 (1cs); 35°04.1'N, 139°31.5'E – 35°04.2'N, 139°32.1'E, 750–870 m, KT-76-3, St. BS4, 3.1976 (3cs). Shimoda, 34°41.0'N, 139°01.1'E – 34°40.7'N, 139°00.6'E, 102– 92 m, St. 12, 11.1981 (6cs, 2af). North of Tokunoshima Island, 28°03.79'N, 128°56.31'E – 28°04.71'N, 128°57.59'E, 533–583 m, KH-05-1, St. OT-10, 5.2005 (1af). Additional material examined. Holotype: Zoological Museum of Moscow State University, Pol. 301, N Atlantic, off northern Norway, Stn. 11, 71°10’N, 17°00’E, Transect 105, 354– 357 m, R/V Tunets, Sigsbee Trawl, 21.07.1978, leg. & det. Jirkov. Description. Length 12–16 mm, width 0.8–1 mm. Prostomium simple, without glandular ridges or eyes (Fig. 15 A). Buccal tentacles broad, smooth, with deep ventral groove (Fig. 15 A, B, C). Segment II dorsally reduced or overgrown by segment III (Fig. 15 A, B). Two pairs of cirriform branchiae in a transverse line at anterior end of segment III (Fig. 15 A); branchial groups separated by small median gap (Fig. 15 A); branchiae of segment II in innermost position, branchiae of segment III in outermost position (Fig. 17 F). Chaetae in segments II and III absent. Notopodia with limbate capillary notochaetae from segment IV, present in 12 segments. Notopodia in second-to-last thoracic unciniger elevated, connected by dorsal ridge (Fig. 15 D, E); ...