Syllis cornuta Rathke, 1843

Linero-Arana, Ildefonso & Diaz Diaz, Oscarn, 2011, Syllidae (Annelida, Polychaeta) from the Caribbean coast of Venezuela, ZooKeys 117, pp. 1-28 : 11

Syllis cornuta Rathke, 1843 Figs 3.19-3.22

Syllis (Ehlersia) cornuta Fauvel 1923:267, fig. 100 g– 1.

Langerhansia cornuta Imajima 1966:256, fig. 51 a–o.

Syllis (Langerhansia) cornuta Day 1967:244, fig. 12.2. s–u; 1973:29.- Gardiner 1976:140, fig. 12 o–s.– Uebelacker 1984:120-122, fig. 114 a–f.

Syllis cornuta Pettibone 1963:118, figs. 31i, j.

Material examined.

BMIL297, (37); (2), BMIL397; BMIL498, (18), all specimens associated with Aplysina fistularis , 1-3 m depth; BMPL297, (10); BMPL398, (3), all specimens associated with Ircinia felix 1-2 m depth.

Description.

Length to 29.5 mm,width 0.77 mm. Body with up to 107 chaetigers. Prostomium with a pair of anterior eyespots and two pairs of eyes in trapezoidal arrangement. Median antenna with 11-27 articles; lateral ones with 9-20 articles. Palps long, fused basally. Dorsal tentacular cirri with 11-19 articles, ventral ones with 7-16 articles. Dorsal cirri on anterior chaetigers with 7-33 articles, 5-25 articles medially. Dorsal compound spiniger chaetae, finely serrated, present from chaetiger 1 (Fig. 3.19). Compound falcigers bidentate, serrated with small subterminal tooth (Fig. 3.20). Stout, bifid, dorsal simple chaeta with subdistal serrations (Fig. 3.21) and bidentate ventral simple chaeta (Fig. 3.22) both only present on posterior chaetigers. Pharynx extending through 6-12 chaetigers, with a crown of ten soft papillae and middorsal subterminal tooth. Proventriculus extending through 4-6 chaetigers, with 36-48 rows of muscle cells. Pygidium with a pair of anal cirri with 18-28 articles and midventral digitiform cirrus.

Distribution.

Cosmopolitan.