Polycirrus arcticus Sars 1865

• Main Authors: Glasby, Christopher J., Hutchings, Pat
• Format: Other/Unknown Material
• Language: unknown
• Published: 2014
• Subjects: Biodiversity; Taxonomy; Animalia; Annelida; Polychaeta; Terebellida; Terebellidae; Polycirrus; Polycirrus arcticus; Arctic; Arctic Ocean; Malmgren; Norway; Svalbard; Svalbard Archipelago; Vadsø; Spitzbergen; Spitsbergen
• Online Access: https://zenodo.org/record/4948566; https://doi.org/10.5281/zenodo.4948566

Polycirrus arcticus Sars, 1865 Fig. 7a–f Polycirrus arcticus Sars, 1865: 14; Holthe, 1986b: 147–148. Leucariste albicans Malmgren, 1865: 390–391. Type locality. Vadsø, Norway. Material examined. SYNTYPES of Polycirrus articus ZMO C3204 Norway, Vadsø, lg. Danielsen. SYNTYPES of Polycirrus albicans SMNH 1131 ‘ Spetsb Naygatia’, 182 m (100 fms), A.J. Malmgren SMNH 6741; 1127 ‘ Spetsb Crassob’, 91 m (50 fms), ‘ Goes et Smitt’ SMNH 6743; 1124 ‘ Spetsb Wydels’, 73 m (40 fms), 1126 ‘ Goes et Smitt’ SMNH 6738 (designated here as LECTOTYPE); 1125 ‘ Spetsb Wahlenb’, 92 m (50 fms), A.J. Malmgren SMNH 6737; ZMO C1536 ‘ Kingsbay Spitzbergen, Lerbund’ 220 m (120 fms), viii.1861 (all places on the island of Spitsbergen, Svalbard Archipelago, Norway, Arctic Ocean). Description. Syntypes of P. articus in poor condition, consisting of several complete specimens up to 30 mm long and 2 mm wide, colourless, virtually impossible to count number of chaetigers as segmentation indistinct, notopodia and neuropodia small and indistinct, ventral pads not differentiated. Following description based upon P. albicans (SMNH 6738) which consists of six individuals, the largest and best preserved specimen is described in detail and designated the lectotype; the other five lots (SMNH 6741, SMNH 6743, SMNH 6738, SMNH 6737 and ZMO C1536) are designated as paralectotypes. Lectotype pale cream in colour, 30 mm long and 2.5 mm wide excluding buccal tentacles, complete with about 46 segments. Sex male. Body consists of 46–47 segments, 30–35 mm long. Body transparent, red nephridia and intestine visible through body wall according to Sars. Dorsum anteriorly smooth. Venter anteriorly with mid-ventral groove and poorly defined narrow ventro-lateral pads which are longer than wide; pads more-or-less smooth. Mid-ventral groove from segment 3. Buccal tentacles numerous, of two types: (1) cylindrical, thickened distally, and distinctly grooved and (2) cylindrical, uniformly thin, and weakly grooved, both arising at junction between prostomium and upper lip. ...