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.