Haplosyllis granulosa (Lattig, Martin & San Martín, 2007) new comb.

Geminosyllis granulosa Lattig, Martin & San Martín, 2007: 561, figs 5–6.

Haplosyllis spongicola .— San Martín, 2003: 324, fig. 179B (in part)

Syllis spongicola spongicola .— Cognetti, 1955: 1 –3, fig. 1a.— Cognetti, 1957: 10 –14, fig. 2a.— Cognetti, 1961: 294.

Examined material. W Mediterranean, Nerja (Spain). Holotype MNCN 16.01/10606; 155 Paratypes MNCN 16.01/10607.

Diagnosis. Body slender, length 5–10 mm for 28 to 52 chaetigers. Dorsal surface granulose. Trepan with 10 small teeth. First dorsal cirri long (18–30 articles), midbody dorsal cirri less than ½ body width. Chaetae all bidentate, 2–7 chaetae on each parapodium, MJP straight; US of MF with long denticles.

Host. Unknown. Found in calcareous concretions of Mesophyllum lichenoides and Lithophyllum expansum, 3–25 m, and among rhizomes of Posidonia, 2–20 m (Lattig et al. 2007).

Reproduction. Haplosyllis granulosa reproduces by acephalous stolons with one pair of blackish ocular spots per parapodia. One paratype was observed early during the formation of the stolon, with the reproductive body still attached to the adult. The specimen had 54 segments, the last 14 forming the stolon.

Distribution. W Mediterranean Sea.

Remarks. The species resembles H. djiboutiensis in number of segments occupied by both pharynx and proventricle, the granulose aspect, length pattern of dorsal cirri and in chaetal shape. They can be distinguished from each other by the chaetal morphology (all similar in H. granulosa while both chaetae of each parapodium are different in H. djiboutiensis). It would be interesting to obtain more specimens of H. djiboutiensis in order to document the morphological variability of their chaetae.