Exogone (Exogone) dispar
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Ordo: Aciculata
Familia: Syllidae
Genus: Exogone
Name
Exogone dispar (Webster, 1879) – Wikispecies link – Pensoft Profile
- Paedophylax dispar Webster 1879[1]:223, pl.4, fig. 49, pl.5, figs. 50–55.
- Exogone dispar Day1973:33.–Pettibone 1963[2]:130–131, fig. 35d.–Taylor, 1971:201–204.–Westheide 1974[3]:106, figs. 48A–H, 49A–D.–Gardiner 1976[4]:132, fig. llf–i.–Perkins 1981[5]:1090.–Uebelacker 1984[6]:42–43, fig. 36a–e.
- Exogone (Exogone) dispar Ruíz-Ramírez and Salazar-Vallejo 2001[7]:127, fig. 3(45–54).–San Martín and Bone 2001[8]:612.–San Martín 2003[9]:274–276, figs. 149, 150. –2005[10]:137–138, figs. 81F, 85A–G.
Material examined
GCPG198, (4), fine sand, 1 m depth; BMER203, (2), fine sand, 4 m depth; PALB104, (16), sand with Gemma gemma (Totten 1834) (Bivalvia: Veneridae), 1 m depth; BMIL197, (6); BMIL498, (12); BMIL602, (3); all specimens associated with Aplysina fistularis,1–3 m depth; BMPL197, (12), BMIL602 (8), associated with Ircinia felix, 1–2 m depth.
Description
Length to 6.2 mm, width to 0.4 mm. Body relatively long, with up to 41 chaetigers. Prostomium with two pairs of lentigerous eyes. Median antenna fusiform, lateral antennae small, ovoid. Palps fused dorsally. All cirri ovoid. Dorsal cirri on all chaetigers. Dorsal simple chaeta blunt with subdistal spines (Fig. 2.6), present from chaetiger 1. Dorsal compound pseudospinigers serrated, slightly bifid, on anterior chaetigers (Fig. 2.7), (Fig. 2.8); compound falcigers bidentate with small distal tooth, and spines on the shaft-head (Fig. 2.9). Ventral simple chaeta bidentate with small distal tooth, only present on posterior chaetigers (Fig. 2.10). Pharynx extending through 4 chaetigers, with marginal crown of papillae, and subterminal dorsal tooth. Proventriculus extending through 4 chaetigers, with 19–22 rows of muscle cells. Pygidium with a pair of cirriform, relatively long cirri.
Remarks
From hard bottom substrats of Trinidad and Tobago islands is the most abundant species (Gobin 2010[11]).
Distribution
North Pacific, Galapagos Islands, South Japan, Australia, North Atlantic, Mediterranean, Arctic, Alaska to Mexico, South Africa, Maine to Florida, Gulf of Mexico, Trinidad & Tobago, Venezuela.
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
- ↑ Webster H (1879) Annelida Chaetopoda of the Virginian coast. Transactions of the Albany Institute 9:201-272.
- ↑ 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.
- ↑ Westheide W (1974) Interstitielle Fauna von Galapagos. 11. Pisionidae, Hesionidae, Pilargidae, Syllidae (Polychaeta). Mikrofauna des Meeresbodens 44: 195–338.
- ↑ Gardiner S (1976) Errant polychaete annelids from North Carolina. Journal of the Elisha Mitchell Scientific Society 91:77-220.
- ↑ Perkins T (1981) Syllidae (Polychaeta), principally from Florida, with descriptions of a new genus and twenty–one new species. Proceedings of the Biological Society of Washington 93 (4):1080-1172.
- ↑ 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.
- ↑ Ruíz-Ramírez J, Salazar-Vallejo S (2001) Revista de Biología Tropical 49 (1):117-140.
- ↑ San Martín G, Bone D (2001) Syllidae (Polychaeta) de praderas de Thalassia testudinum en el Parque Nacional Morrocoy (Venezuela). Revista de Biología Tropical 49 (2):609-620.
- ↑ 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.
- ↑ San Martín G (2005) Exogoninae (Polychaeta: Syllidae) from Australia with the description of a new genus and twenty-two new species. Records of the Australian Museum 57 (1):39-152.doi: 10.3853/j.0067-1975.57.2005.1438
- ↑ 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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