WoRMS source details

San Martín, G. and López, E. 2003. A new genus of Syllidae (Polychaeta) from Western Australia. Hydrobiologia, 496: 191-197.
Kristian Fauchald's Polychaeta DB
During a study carried out on the subfamily Exogoninae (Syllidae) from Australia, several specimens of a new genus and species were found in samples of dead coral substrate from Western Australia. They have long palps, fused except for a terminal notch, long median and two short lateral antennae, a single pair of short tentacular cirri, and short dorsal cirri, somewhat longer than the parapodial lobes. These characters resemble those of the genus Exogone Örsted, 1845. However, all these appendages are articulated. The chaetae are very similar to those of several species of Syllis Lamarck, 1818, having coarse spines on the margin of compound chaetal blades and truncated dorsal simple chaetae. Furthermore, the pharynx begins in chaetiger 3, posterior to the peristomium, as in many species of the genus Syllis; this condition does not occur in any described species of Exogone. The new genus is provisionally proposed to belong to the subfamily Syllinae, although it has some characters typical of the Exogoninae. Examination under the SEM shows another peculiar feature, the nuchal organs are distinctly laterally located. Within the Syllinae, only Paratyposyllis Hartmann-Schröder, 1962 has a single pair of tentacular cirri, but in that genus, the palps are only basally fused.
Systematics, Taxonomy
2013-01-12 18:30:12Z
2014-05-18 17:53:21Z

Holotype AM W26500, geounit Australia, identified as Karroonsyllis exogoneformis San Martín & López, 2003

Australia, Western Australia, Abrolhos Islands. Known only from the type locality.  [details]


The name of the genus is derived from teh Australian aboriginal word 'Karroon', which means 'deformed', and Syllis.  [details]


The specific epithet exogoneformis refers to the similarity with the shape of the species belonging to the genus ... [details]


Dead coral substrate embeded in calcareous substrate or covered with coralline and or brown algae. [details]

 Type locality

Australia, Western Australia (marine), Abrolhos Islands, Goss Passage, SE end of Long Island (28º28.8'S, 113º46.5'E).  [details]