Streptosyllis Webster & Benedict, 1884

San Martin, G & Hutchings, PA, 2006, Eusyllinae (Polychaeta: Syllidae) from Australia with the Description of a New Genus and Fifteen New Species, Records of the Australian Museum 58, pp. 257-370 : 354

Genus Streptosyllis Webster & Benedict, 1884

Streptosyllis Webster & Benedict, 1884: 711 .

Type species. Streptosyllis arenae Webster & Benedict, 1884 , by monotypy.

Diagnosis. Body small (<5 mm in length), with up to about 40 chaetigers, usually 20–30. Prostomium with 4 eyes and 2 anterior eyespots. Three antennae. Palps fused at bases, without median furrow, sometimes terminating with 2 papillae, occasionally reduced and only papillae visible. Nuchal organs as 2 ciliated grooves between prostomium and peristomium. Dorsal cirri usually smooth or indistinctly articulated, club-shaped to elongated, sometimes with glandular inclusions. Ventral cirri digitiform, sometimes distinctly longer than parapodial lobes and pseudoarticulated, arising from middle of parapodial lobes. Compound chaetae, homogomph to hemigomph, blades falcigerous or, exceptionally, some spiniger-like chaetae. Dorsal simple chaetae present usually from chaetiger 1. Ventral simple chaetae absent. Aciculae from some anterior parapodia distinctly enlarged. Pharynx unarmed, provided with crown of soft papillae. Proventricle with poorly defined muscle cell rows. Reproduction by epigamy ( Garwood, 1991).