Chaetozone careyi Blake, 2015, new species

• Main Author: Blake, James A.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2015
• Subjects: Biodiversity; Taxonomy; Animalia; Annelida; Polychaeta; Terebellida; Cirratulidae; Chaetozone; Chaetozone careyi; Arctic; Hudson; Hudson Strait; McIntyre; Malmgren; Pitt Point; Beaufort Sea; narwhal*; Subarctic
• Online Access: https://zenodo.org/record/5664936; https://doi.org/10.5281/zenodo.5664936

Chaetozone careyi new species Figures 7–8 Chaetozone setosa: Carey et al. 1984: 99, 103. Not Malmgren 1867. Chaetozone sp. Goldsmit et al. 2014, Table 1 S. Material examined. Alaskan Arctic, Beaufort Sea, coll. off Pitt Point, 20 May 1976, 71° 19 ʹN, 152 ° 38.5 ʹW, 55 m, 0.1 m 2 Smith-McIntyre grab, Bell 205 helicopter, Sta. PPB- 55, coll. A.G. Carey Jr., holotype (LACM-AHF Poly 6537), 1 paratype (LACM-AHF-Poly 6538); Beaufort Sea, coll. off Narwhal Island, 28 Aug 1976, 70° 24.3 ʹN, 147 ° 29.2 ʹW, 10 m, 0.1 m 2 Smith-McIntyre grab, R/V Aluminak Sta. NIB- 15, coll. P.A. Montagna, 10 paratypes (LACM-AHF-Poly 6539).— Canadian subarctic, Hudson Strait, Deception Bay, Quebec, coll. Jésica Goldsmit, Sta. 4 B, 0 2 Aug 2012, 62° 13.187 ʹN, 74 ° 52.187 ʹW, intertidal, in sand, 5 specimens (CMNA 2014 -0015); Sta. 3 D, 0 2 Aug 2012, 62° 30.137 ʹN, 74 ° 48.614 ʹW, 6.7 m, in sand and silt, 2 specimens (CMNA 2014 -0016). Description. A moderate-sized species, holotype complete, 11 mm long, 0.6 mm wide across thoracic region, with 118 setigerous segments; most paratypes complete, smaller than holotype; Deception Bay specimens of similar size, up to 11 mm long, 0.8 mm wide, for 90 setigers. Body relatively sleek in appearance, not expanded in anterior region, consistent in width along most of body, narrowing in far posterior setigers. Dorsal surface of body with weak longitudinal groove (Fig. 8 A), venter with distinct groove along entire length of body (Fig. 8 B). Color in alcohol light tan with no body pigment. Prostomium triangular, acutely pointed on anterior margin (Figs. 7 A, 8 A); eyes absent; nuchal organs not pigmented, narrow slits at posterior lateral margin of prostomium; peristomium elongate, with 3–4 rings (Fig. 7 A); peristomium extending dorsally over achaetous segment 1; dorsal tentacles arising over segment 2 (setiger 1) (Figs. 7 A, 8 A); first pair of branchiae arising from achaetous segment 1; second pair of branchiae arising from segment 2 (setiger 1) lateral to paired medial dorsal tentacles and dorsal to ...