Prosphaerosyllis isabellae ( Nogueira, San Martín & Amaral, 2001 ), Nogueira, San Martin & Amaral, 2001

Barroso, Rômulo, Paiva, Paulo Cesar De, Nogueira, João Miguel De Matos & Fukuda, Marcelo Veronesi, 2017, Deep sea Syllidae (Annelida, Phyllodocida) from Southwestern Atlantic, Zootaxa 4221 (4), pp. 401-430 : 413-414

Prosphaerosyllis isabellae ( Nogueira, San Martín & Amaral, 2001)

Sphaerosyllis isabellae Nogueira et al., 2001: 1777 –1779, Fig. 1 .

Prosphaerosyllis isabellae . San Martín 2005: 68, Fig. 23; Fukuda et al. 2009: 1450 –1453, Figs. 4–5 .

Material examined. Project ' Oceanprof '. 22°40’57.84”S, 40°16’30.35”W, 0–2 cm, 1045 m, 1 spec. (MNRJP 1177), 22 Nov 2002.

Diagnosis. Palps densely papillated. Dorsal cirri throughout with bulbous base, with iridescent inclusions, distal end with nearly spherical tip. A pair of papillae on each parapodium; aciculae subdistally bent and thick, with acute tip. Pharynx with pair of brown glands in chaetiger 1.

Remarks. The specimen herein studied is similar to those of the original description. This is the deepest record of this species.

Geographic distribution and bathymetric range. Atlantic Ocean—Brazil, Rio de Janeiro, 110–1045 m deep ; São Paulo, shallow subtidal to 808 m deep ( Nogueira et al. 2001; Fukuda et al. 2009); Pacific Ocean: Australia, 6– 30 m deep ( San Martín 2005). The specimen found in Campos Basin was obtained from 1045 m deep.

Figures

FIGURE 1. Exogone anomalochaeta. (A) anterior body, dorsal view; (B – C) falcigers, anterior and mid- to posterior body chaetigers, respectively; (D, H) aciculae, anterior and posterior body chaetigers, respectively; (E – F) dorsal simple chaetae, anterior and posterior body chaetigers, respectively; (G) ventral simple chaeta.

FIGURE 4. Parexogone campoyi. (A, J) anterior body, dorsal view; (B) dorsal simple chaeta; (C) ventral simple chaeta; (D – E) aciculae, anterior and posterior body chaetigers, respectively; (F – I, K – L) falcigers, midbody chaetigers.

FIGURE 5. Parexogone campoyi, SEM. (A) entire worm (posteriorly incomplete, broken); (B – C) anterior body, dorsal and ventral views, respectively; (D) close up of the oral area.