Syllis gracilis
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Ordo: Aciculata
Familia: Syllidae
Genus: Syllis
Name
Syllis gracilis Fauvel, 1923 – Wikispecies link – Pensoft Profile
- Syllis (Syllis) gracilis Day 1967[1]:241, fig. 12.1.m–p.–Gardiner 1976[2]:139, fig. 12 l–n.–Uebelacker 1984[3]:116–118, fig. 112a–h.–Nogueira and San Martín 2002[4]:68–72, figs. 7, 8.
- Syllis gracilis Fauvel 1923[5]:259 fig. 96f–i.–Pettibone 1963[6]:116, fig. 32a–e.–Imajima 1966[7]:248, fig. 49a–k.– Taylor, 1971:212–214.–San Martín 1992[8]:178.–2003[9]:413–416, figs. 226–227.–Gobin 2010[10] (list only).
Material examined
BMPL297, (8); BMPL398, (4), associated with Chondrila nucula, 1–2 m depth; BMPL297, (2); BMPL398, (4), all specimens associated with Aplysina fistularis, 1–3 m depth; BMIL598, (4); BMPL297, (3); BMPL398, (16); all specimens associated with Ircinia felix, 1–2 m depth; GCET1030, (6), fine to coarse sand, 1 m depth.
Description
Length to 19.5 mm,width 0.7 mm. Body with up to 107 chaetigers. Anterior segments with a pair of dark, dorsal, transverse stripes. Prostomium with two pairs of lentigerous eyes in trapezoidal arrangement. Median antenna with 14–20 articles; lateral antennae with 12–15 articles. Dorsal tentacular cirri with 12–18 articles, ventral ones with 6–12 articles. Dorsal cirri alternating longer, with 16–21 articles, and shorter, with 14–16 articles, diminishing posteriorly. Anterior chaetae compound, bidentate, falcigers (Fig. 3.23), replaced by thick, simple, ypsiloid chaetae (Fig. 3.24) on median chaetigers. Posterior chaetae compound, bidentate, falcigers and slender, bidentate dorsal and ventral simple chaetae. Acicula enlarged subdistally. Pharynx extending through 8–9 chaetigers, with 10 marginal soft papillae, and middorsal subdistal tooth. Proventriculus extending through 11–13 chaetigers, with 36–42 rows of muscle cells. Pygidium with a pair of anal cirri with 6–12 articles and midventral cirrus.
Distribution
Cosmopolitan in temperate and tropical seas.
Taxon Treatment
- Liñero-Arana, I; Díaz Díaz, O; 2011: Syllidae (Annelida, Polychaeta) from the Caribbean coast of Venezuela ZooKeys, 117: 1-28. doi
Other References
- ↑ Day J (1967) A monograph on the Polychaeta of Southern Africa. Pt. 1 Errantia. Pt. 2. Sedentaria. British Museum of Natural History Publications 656:1-878.
- ↑ Gardiner S (1976) Errant polychaete annelids from North Carolina. Journal of the Elisha Mitchell Scientific Society 91:77-220.
- ↑ Uebelacker J (1984) Family Syllidae Grube, 1850. In: Uebelacker J Johnson P (Eds) Taxonomic Guide to the Polychaetes of the Northern Gulf of Mexico. Barry A Vittor & Assoc., Inc., Mobile, Alabama, IV, 1–151.
- ↑ Nogueira J, San Martín G (2002) Species of Syllis Savigny in Lamarck, 1818 (Polychaeta: Syllidae) living in corals in the state of São Paulo, southeastern Brazil. Beaufortia 52:57-93.
- ↑ Fauvel P (1923) Polychètes errantes. Faune de France 5:1-488.
- ↑ Pettibone M (1963) Marine polychaete worms of the New England Region. 1. Aphroditidae through Trochochaetidae. Bulletin of the United States National Museum 227:1-356.
- ↑ Imajima M (1966) The Syllidae (Polychaetous Annelids) from Japan. I. Exogoninae. Publications of the Seto Marine Biological Laboratory 13:385-404.
- ↑ San Martín G (1992) Syllis Savigny in Lamarck, 1818 (Polychaeta: Syllidae: Syllinae) from Cuba, the Gulf of Mexico, Florida and North Carolina, with a revision of several species described by Verrill. Bulletin of Marine Science 51 (2):167-196.
- ↑ San Martín G (2003) Annelida, Polychaeta II: Syllidae. In: Ramos M (Eds) Fauna Ibérica, vol. 21. Museo Nacional de Ciencias Naturales. CSIC, Madrid, 554 pp.
- ↑ Gobin J (2010) Free-living marine polychaetes (Annelida) inhabiting hard-bottom substrates in Trinidad and Tobago, West Indies. Revista de Biología Tropical 58 (1):147-157.
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