Chaetozone bransfieldensis Blake 2018, new combination

• Main Author: Blake, James A.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2018
• Subjects: Biodiversity; Taxonomy; Animalia; Annelida; Polychaeta; Terebellida; Cirratulidae; Chaetozone; Chaetozone bransfieldensis; Antarctic; Antarctic Peninsula; Weddell Sea; Ross Sea; South Shetland Islands; Bransfield Strait; Weddell; Deception Island; Petersen; Malmgren; Adare; Coats Land; Cape Adare; Clarence Island; Antarc*; Low Island
• Online Access: https://zenodo.org/record/3798554; https://doi.org/10.5281/zenodo.3798554

Chaetozone bransfieldensis (Hartmann-Schröder & Rosenfeldt, 1989) new combination Figure 42 Tharyx spp. Hartman 1967: 118 (in part). Chaetozone setosa: Hartman 1978:166 (in part). Not Malmgren, 1866. Caulleriella bransfieldensis Hartmann-Schröder & Rosenfeldt, 1989: 67, figs. 3–5. Material Examined. Antarctic Peninsula, Bransfield Strait, R / V Polarstern, Cr. ANT-III/2, Sta. 207, coll. 3 Dec. 1984, 62°59ʹS, 57°05ʹW, 68 m, holotype (ZMH P-19615); USNS Eltanin Cr. 6, Sta. 436, 8 Jan 1963, 63.23°S, 58° W, Otter trawl, 73 m (1, USNM 1129132).— South Shetland Islands, south of Low Island, R / V Hero Sta. 691- 26, 10 Feb 1969, 63.425°S, 62.250°W, 119–124 m, (1, USNM 187652); NE of Clarence Island, USNS Eltanin Cr. 12, Sta. 1089, 17 Apr 1964, 60.78°S, 53.507°W, 641 m (1, USNM 56078); Deception Island, R / V Hero, Sta. 721- 797, 12 Jan 1972, 62.972°S, 60.83°W, Petersen grab, 81 m (1, USNM 1490769).— Ross Sea, off Cape Adare, USNS Eltanin Cr. 27, Sta. 1869, 13 Jan 1967, 71.267°S, 171.667°E, trawl, 1565–1674 m, (1, USNM 1490768).— Weddell Sea, Coats Land, off Halley Bay, USCG Glacier, Sta. 69-1, 24 Feb 1969, 74.468°S, 30.528°W, Anchor dredge, 513 m (3, USNM 46788). Description. A small to moderate-sized species, holotype approximately 10 mm long, 1.0 mm wide for 82 setigers; paratypes reported larger, 22 mm long, 1 mm wide with up to 122 setigers (Hartmann-Schröder & Rosenfeldt 1989). Body enlarged, somewhat fusiform anteriorly, then narrowing posteriorly. Color in alcohol: light tan, with some faint dusky pigment on anterior end especially in grooves of peristomial annuli. Prostomium triangular, narrowing to rounded tip (Fig. 42A); a single pair of reddish eyespots present (Fig. 42A inset), or absent; each eyespot when present round with distinct lens surrounded by red pigment cup; nuchal organs not observed. Peristomium wide, with two annuli, second trapezoidal in shape, narrowing posteriorly and terminating in middle of setiger 1. Dorsal tentacles arising from setiger 1, lateral to end of peristomium (Fig. ...