WoRMS source details

Lucas, Y.; Martin, G. S.; Sikorski, A. 2010. A new genus and species of Syllidae (Annelida Polychaeta) from off the coast of Norway with unusual morphological characters and an uncertain systematic position. Proceedings of the Biological Society of Washington 123(4): 251-257
Polychaeta database
In this paper a description of Acritagasyllis longichaetosus, an enigmatic genus and species of Syllidae (Polychaeta), is given The new genus is characterized by a lack of palps, eyes, and median antenna, having a single pair of tentacular (peristomial) cirri, distinct ventral cirri fused all along their length to parapodial lobes, a slender, coiled pharynx without trepan but with a pharyngeal tooth, compound chaetae with long shafts, distally enlarged and spinose, and long, filiform blades, quite similar to those belonging to members of the family Phyllodocidae. These characters are very unusual and unique among syllids. Some characters, like the presence of nuchal lappets, bayonet-shaped simple chaetae, and perhaps also the fusion of ventral cirri to parapodial lobes, bear some resemblance to those of species of Autolytinae. However, this new polychaete does not fit into this subfamily as it possesses ventral cirri, the chaetae are very different, and it lacks a trepan in the pharynx, nor can it be placed into any other subfamily, being an "incertae sedis" among the genera of Syllidae.
2013-01-12 18:30:12Z

Holotype MNCN MNCNM 16.01/ 11601, locality North Sea, identified as Acritagasyllis longichaetosus Lucas, San Martín & Sikorski, 2010

Epithet is a reference to long chaetae on all parapodia. [details]


From the Latin, acrit meaning ‘‘confuse,’’ and aga, ‘‘very, very much,’’ and Syllis, the type genus ... [details]

 Type locality

Northern North Sea, Atlantic Ocean, 61 deg 22’ 25” N, 2 deg 27’ 57” E (61.373611° 2.465833°), 330 m [details]