Parapionosyllis longicirrata (Webster & Benedict, 1884)

Linero-Arana, Ildefonso & Diaz Diaz, Oscarn, 2011, Syllidae (Annelida, Polychaeta) from the Caribbean coast of Venezuela, ZooKeys 117, pp. 1-28 : 8

Parapionosyllis longicirrata (Webster & Benedict, 1884) Figs 2.15-2.17

Sphaerosyllis longicirrata Webster and Benedict 1884:715, pl. 8, figs. 95-100.

Parapionosyllis longicirrata Pettibone 1963:132, fig. 35e,f.- Perkins 1981:1102, fig. 9 a–m.– Uebelacker 1984:58-60, fig. 52 a–g.

Material examined.

PAPC106, (13), as epibionts on tubes of Americonuphis magna (Andrews 1891), 0.3-0.6 m depth.

Description.

Length to 3.9 mm, width to 0.26 mm. Body with up to 42 chaetigers. Prostomium with a pair of anterior eyespots and two pairs of posterior lentigerous eyes in trapezoidal arrangement. Antennae fusiform with digitiform end. Palps fused dorsally over half their length. Tentacular and dorsal cirri subulate. Dorsal cirri fusiform. Dorsal simple chaeta with subdistal serrations present from chaetiger 1 (Fig. 2.15, 2.16). Compound falcigers unidentate with coarse serrations and subdistal spine (Fig. 2.17). Ventral simple falcate chaeta, only present on posterior chaetigers. Acicula with circular end. Pharynx extending through 3 chaetigers, with anterior middorsal tooth. Proventriculus extending through 2 chaetigers, with 14-17 rows of muscle cells. Pygidium with two cirriform anal cirri.

Distribution.

Massachusetts, Florida, Gulf of Mexico, Venezuela.