Eusyllis assimilis Marenzeller, 1875

Çinar, Melih Ertan & Gambi, Maria Cristina, 2005, Cognetti’s syllid collection (Polychaeta: Syllidae) deposited at the Museum of the Stazione Zoologica ‘‘ Anton Dohrn’ ’ (Naples, Italy), with descriptions of two new species of Autolytus, Journal of Natural History 39 (10), pp. 725-762 : 750

Eusyllis assimilis Marenzeller, 1875

Eusyllis assimilis: Fauvel 1923, p 294 , Figures 112a–g; Campoy 1982, p 333, Figure 26; San Martín 1984, p 82, Figure 10 .

Eusyllis lamelligera: Cognetti 1957 (in part), p 48 (non Marion and Bobretzky 1875).

Material examined

SZN-POL13, one specimen, Station 3, Secca della Gajola, on coralligenous substrata, 40 m, coll. Cognetti.

Notes

Specimen complete, 8.75 mm long, 0.40 mm wide, H+ 1051.50 mm, for 52 chaetigers. Falcigers numbering 18 on anterior parapodia, bidentate; four superior-most falcigers with long, relatively thin blades; ca 25 Mm long; remaining falcigers with relatively thick blades; 15– 17.5 Mm long. Posterior falcigers numbering seven; superior-most with long, thin blade, 22.5 Mm long, remaining falcigers with thick blades; ca 17.5 Mm long. Dorsal simple chaeta from chaetiger 7, very thin, slightly bidentate. Ventral simple chaeta seen on last 14 chaetigers, thick (five times thicker than dorsal one), strongly bidentate. Proventricle 0.65 mm long, 0.28 mm wide, occupying four segments, with 47 muscle cell rows. Pharynx as long as proventricle, with a coarse tooth antero-dorsally. Pygidium with long (1.15 mm) anal cirri.

Distribution

Mediterranean, Atlantic and Pacific Oceans (San Martín 1984).

Figures

Figure 10. (A) Ventral view of anterior part of Virchowia clavata; (B) inferior falciger on anterior parapodium; (C) dorsal simple chaeta; (D) pygidium. Scale bar: 60 Mm (A, D); 2.3 Mm (B, C).