Salvatoria euritmica (Sardá, 1984), Guillermo San Martin, 2005

Guillermo San Martin, 2005, Exogoninae (Polychaeta: Syllidae) from Australia With the Description of a New Genus and Twenty-two New Species, Records of the Australian Museum 57, pp. 39-152 : 53

Salvatoria euritmica (Sardá, 1984)

Fig. 8A–G

Pseudobrania euritmica Sardá, 1984: 10 , fig. 1.

Grubeosyllis euritmica .–San Martín, 1991a: 718, figs. 2c,d.

Salvatoria euritmica .–San Martín, 2003: 169, figs. 84–86.

Pionosyllis yambaensis Hartmann-Schröder, 1990: 52 , figs. 18–22.

Material examined. AUSTRALIA: WESTERN AUSTRALIA. 1 specimen, AM W26724, Goss Passage, Beacon Island, 28°25.5'S 113°47.0'E, dead plates of Acropora covered in coralline algae, 8 m, P.A. Hutchings, 19 May 1994. 1 specimen, AM W26725, Wallabi Group, Houtman Abrolhos, 28°38.68'S 113°45.37'E, bivalves, shell debris, fine sand and algae, 37 m, P.A. Hutchings on FRV “Flinders”, 28 May 1994. 1 specimen, AM W27413, Red Bluff, Kalbarri, 27°42'S 114°09'E, mixed brown algae from rocky shore, 4 m, R.T. Springthorpe, 10 Jan 1984. 1 specimen, AM W27418, Red Bluff, Kalbarri, 27°42'S 114°09'E, round-leaved seagrass in shallow sand on rock, 4 m, R.T. Springthorpe, 10 Jan 1984. 7 specimens, AM W27422, Red Bluff, Kalbarri, 27°42'S 114°09'E, mixed coralline algae from rocky shore, 4 m, J.K. Lowry, 10 Jan 1984. Paratype of Pionosyllis yambaensis , 1 specimen, ZMUH, P-19966, Yamba, algae, 18 Jan 1976.

Description. Body small, proportionally broad anteriorly; a mature female carrying eggs, 2 mm long, 0.2 mm wide, 28 chaetigers; larger specimens up to 4 mm long, 0.35 mm wide, 29 chaetigers. Prostomium ovate to subpentagonal; 4 large eyes in trapezoidal arrangement and, sometimes, 1 pair of anterior small eyespots. Median antenna spindleshaped, inserted between posterior eyes, longer than prostomium and palps together, usually about 2 times longer; lateral antennae similar in shape but shorter than median antenna, inserted in front of anterior pair of eyes (Fig. 8A). Palps similar in length to prostomium, broad, dorsally fused on their basal 2 ⁄ 3, leaving a deep distal notch. Two distinct ciliated nuchal organs between prostomium and peristomium (Fig. 8A). Peristomium similar in length to following segments; dorsal tentacular cirri similar to median antenna, usually slightly shorter, ventral tentacular cirri similar in length to lateral antennae. Dorsal cirri on all parapodia, spindle-shaped, those of chaetiger 1 longer than remaining, similar in length to median antenna; dorsal cirri of chaetiger 2 and 3 much shorter, remaining dorsal cirri alternating long and short, always shorter than body width (Fig. 8A). Parapodia each with 10 compound chaetae anteriorly, 9 in posterior parapodia, similar throughout, with proportionally thick shafts and strongly bidentate blades, with both teeth similar in size, widely separated by a concave, rounded space, provided with moderately long, fine, erect marginal spines, longer in dorsal chaetae, dorsoventral gradation in length of blades, 22 µm above 16 µm below on anterior parapodia (Fig. 8B), 20 µm above 14 µm below on posterior parapodia (Fig. 8E). Dorsal simple chaetae distinctly bidentate, with short subdistal marginal spines (Fig. 8D), present from proventricular segments. Ventral simple chaetae similar to dorsal one (Fig. 8F), on most posterior parapodia. Anterior parapodia each with 2 aciculae, one acuminate and another straight, with a subdistal small enlargement (Fig. 8C), remaining parapodia with solitary acicula, acuminate (Fig. 8G). Pharynx wide, usually cup-shaped, through 4–5 segments; pharyngeal tooth ovate, located near opening (Fig. 8A). Proventricle similar in length to pharynx, through about 3–4 segments, with about 15–20 muscle cell rows. Pygidium small, with 2 anal cirri similar to dorsal cirri.

Remarks. The original description of P. yambaensis and the examined paratype of that species agrees with the descriptions of Salvatoria euritmica from the Mediterranean Sea, so I assume that they are synonyms.

Distribution. Southern area of Spanish Mediterranean, Caribbean Sea, Australia (Western Australia, New South Wales).

Habitat. Amongst algae, seagrass, debris, in shallow water.