Ophelina helgolandica Augener, 1912
publication ID |
https://doi.org/ 10.1007/s13127-011-0046-2 |
persistent identifier |
https://treatment.plazi.org/id/0388C73D-FFE7-B879-ECBD-F959FCA5F9BB |
treatment provided by |
Felipe |
scientific name |
Ophelina helgolandica Augener, 1912 |
status |
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Ophelina helgolandica Augener, 1912 View in CoL
( Figs. 9e View Fig and 11 View Fig ) Ophelina helgolandiae Augener — Augener (1912: 174);
Støp-Bowitz (1945: 48); Støp-Bowitz (1948. 17). Ophelina helgolandica Augener — Hansson (1998: 109);
Rowe (2010: 2). See Remarks below.
Material examined BIOICE material: 143 specimens (1.20% of Opheliidae ) in 18 samples (see Electronic Supplementary Material) .
Comparative material: holotype Ophelina groenlandica Støp-Bowitz, 1948 (SMNH T-7831). 1 specimen Ophelina norvegica Støp-Bowitz, 1945 (SMNH 11137).
Description Specimens 14–30 mm long, 1.0–1.8 mm wide, with 30–34 chaetigers. Prostomium conical, with well defined palpode which is apparently articulated ( Fig. 11a View Fig ; see also Augener 1912: fig. 9), and with a nuchal organ provided with a posterior lappet ( Fig. 11b View Fig ). No eyes observed. Parapodia well defined, with minute spherical dorsal cirrus and subulate ventral lobe ( Fig. 11c View Fig ). All chaetae capillaries. Branchiae characteristically abruptly tapered distally ( Fig. 11d View Fig ); size of branchiae increasing from second chaetiger to end of body, last pairs of branchiae substantially smaller ( Fig. 11e View Fig ). First and last three chaetigers lacking branchiae ( Fig. 11a, f View Fig ). A ciliated lateral organ between dorsal and ventral chaetae bundles ( Fig. 11e View Fig ). Anal tube short, cylindrical, slightly truncated and obliquely opened towards dorsal part of body ( Fig. 11f View Fig ).
Occurrence This species was found along the coast of Iceland, mostly between the 500 m and 1000 m isobaths (depth range 562–2710 m). Temperature range −0.77–5.18°C.
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