A new species and phylogenetic insights in Hesiospina (Annelida, Hesionidae)
Bonifácio, Paulo
Lelièvre, Yann
Omnes, Emmanuelle
Zootaxa
2018
2018-06-26
4441
1
59
75
84P36
Imajima & Hartman 1964
Imajima & Hartman
1964
[238,710,429,455]
Polychaeta
Hesionidae
Hesiospina
GBIF
Animalia
Phyllodocida
4
63
Annelida
genus
Type species: Kefersteinia similis Hessle 1925.
Diagnosis(based on Pleijel 1998, 2004):Number of segments variable. Prostomium about rectangular. Facial tubercle present or absent. Palps biarticuled; palpophores well developed; palpostyles ovoid or tapered. Median antenna absent; paired antenna present. Two pairs of eyes present or absent. Nuchal organs middorsally coalescing. Lip glands absent. Terminal ring of proboscis with more than 10 papillae; ventral incision absent; dorsal and ventral jaws plates present or absent. Enlarged dorsal cirri on segments 1–5, from segment 6 (chaetiger 1) dorsal cirri long; enlarged ventral cirri on segments 1–4. Protruding notopodial hooks present from median segments; notochaetae absent. Neuropodial lobe and neurochaetae present from segment 5 (chaetiger 1); blades of compound neurochaetae with uni- or bidentate tips. Ventral cirri inserted subdistally. Pygidium as a simple ring or cone with pair of anal cirri.