Perkinsyllis San Martín, López & Aguado, 2009

Paresque, Karla, Fukuda, Marcelo Veronesi, Martín, Guillermo San & Nogueira, João Miguel De Matos, 2015, Amblyosyllis, Eusyllis, Odontosyllis, Perkinsyllis and Streptodonta (Annelida: Syllidae) from Brazil, with descriptions of two new species and new records for the country, Zootaxa 4000 (3), pp. 301-334 : 325

Genus Perkinsyllis San Martín, López & Aguado, 2009

Type species: Pionosyllis longisetosa Hartmann-Schröder, 1965 , designated by San Martín et al. (2009).

Diagnosis. Medium-sized worms, with 1–2 transverse bands of cilia per segment dorsally. Palps usually fused only at bases. Prostomium with three antennae, two pairs of eyes and one pair of eyespots, both eyes and eyespots sometimes absent. Peristomium with two pairs of cirri. Long and slender antennae and cirri throughout, smooth to irregularly articulated. Compound chaetae as falcigers and, frequently, spiniger-like chaetae; blades of falcigers spinulated, with spines directed upwards. Distally expanded, bilobed aciculae. Pharynx with single tooth anteriorly; proventricle about same size as pharynx or slightly longer (Fukuda & Nogueira 2013).

Remarks. Currently, the genus counts with 11 species ( San Martín & Aguado 2014). This genus was recorded for the first time from Brazilian waters, off southeastern/southern Brazilian coast, by Fukuda & Nogueira (2013). The authors described two new species, P. biota Fukuda & Nogueira, 2013 and P. koolalyoides Fukuda & Nogueira, 2013 , and also recorded the presence of P. longisetosa ( Hartmann-Schröder, 1965) for the first time in the country.

In the present study, we found P. biota in some collections off the state of Paraíba, expanding the distribution of this species, and consequently of the genus, to the northeastern Brazilian coast.