Syllis ypsiloides Aguado, San Martin & ten Hove 2008

• Main Authors: Martín, Guillermo San, Lucas, Yolanda, Hutchings, Pat
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2024
• Subjects: Biodiversity; Taxonomy; Animalia; Annelida; Polychaeta; Phyllodocida; Syllidae; Syllis; Syllis ypsiloides; Prince of Wales Island
• Online Access: https://doi.org/10.5281/zenodo.11232926; http://treatment.plazi.org/id/E04787CBFFDC54357DF2846CFCC26430

Syllis ypsiloides Aguado, San Martín & ten Hove, 2008 Figure 12 Syllis ypsiloides Aguado, San Martín & ten Hove, 2008: 36, figs 16–18. Material examined . AUSTRALIA, QUEENSLAND: Torres Strait, Prince of Wales Island, bommies northwest of Bamfield Point, 10° 41’ 7” S, 142° 6’ 1” E, coll. 3 Oct 2006, by SCUBA, 3 m, from rocks, AM W.54246, 3 specimens; Keppel Island, 23° 09’ S, 151° 00 E, 51 m, coll. T. Nielson, 1 Aug 1970, AM W.4382, 1 specimen. NEW SOUTH WALES: Sydney Harbour, White Bay Berth 3, 33° 51’ 47” S, 151° 11’ 00” E, coll. M. Capa, K. B. Attwood, R. T. Springthorpe & G. Fonseca, 5 Mar 2009, from wharf piles, 11.8 m, G. San Martin id., AM W.54887, 2 specimens. Description . Body long and slender, longest specimen (incomplete) 18 mm long, 0.8 mm wide, 96 chaetigers, without colour markings or single, faint transverse reddish band on anterior segments (Fig. 12A) on large specimens. Prostomium rounded, with two pairs of small eyes in open trapezoidal arrangement apparently without eyespots. Median antenna inserted on middle of prostomium, longer than combined length of prostomium and palps, with 19 articles; lateral antennae inserted in front of anterior eyes, shorter than median antenna, with 12₋₋15 articles. Palps similar in length to prostomium (Fig. 12A). Peristomium shorter than subsequent segments; dorsal tentacular cirri slightly shorter than median antenna, with 23 articles; ventral tentacular cirri distinctly shorter than dorsal ones, with about 12 articles. Dorsal cirri of first chaetiger long, with 28₋₋29 articles. Anterior dorsal cirri elongated, alternating long and short cirri, long ones similar in length to body, with about 17₋₋20 articles, shorter ones with about 12 articles; chaetigers from end of pharynx dorsal cirri shorter, all similar, alternating long ones with 14 articles and short ones, with 12 articles (Fig. 12A). On midbody, dorsal cirri short, fusiform, alternating with some elongated ones, with 11 articles, and thick ones, with eight articles (Fig. 12B); on posterior ...