Eurysyllis tuberculata Ehlers, 1864

Langeneck, Joachim, Musco, Luigi, Busoni, Giulio, Conese, Ilaria, Aliani, Stefano & Castelli, Alberto, 2018, Syllidae (Annelida: Phyllodocida) from the deep Mediterranean Sea, with the description of three new species, Zootaxa 4369 (2), pp. 197-220 : 209

Eurysyllis tuberculata Ehlers, 1864

Eurysyllis tuberculata Ehlers 1864: 264 ‒268, Pl. 11, Figs 4‒7 ; Fauvel 1923: 271 ‒272, Fig. 101 i‒o San Martín 2003: 296 ‒300, Figs. 162‒164; San Martín et al. 2008: 141‒144, Fig. 20.

Polymastus paradoxus Claparède 1864: 569 ‒571, Pl. 8, Fig. 3 .

Eurysyllis paradoxa Saint-Joseph 1887: 191 ‒195, Figs 68‒74.

Eurysyllis lenta Quatrefages 1866: 59 ‒60, Pl. 8, Figs 18‒23.

Material examined. St. 1: 1 individual.

Distribution. Mediterranean Sea, Atlantic Ocean, Red Sea ( San Martín 2003) and Pacific Ocean (San Martín et al. 2008).

Remarks. The specimen agrees well with the description given by San Martín (2003). In the Mediterranean Sea this species is common in infralittoral algal assemblages suffering sediment deposition, it is less common on muddy bottoms and among circalittoral and bathyal white coral reefs. E. tuberculata has been reported from the surface down to 760 m depth ( San Martín 2003), even though it is rare in deep environments. Following Nygren (2014) hypothesis on Syllidae species reported to have extremely wide geographical distributions and generalist environmental requirements, E. tuberculata could actually represent a species complex.

Figures

FIGURE 3. Exogone sophiae n. sp. Paratype (MSNP: P/0242/V) a) anterior end indorsal view. Holotype (MSNP:P/3879): b) pygidium in dorsal view; c) spiniger-like chaeta from chaetiger 5; d) compound falciger chaetae from chaetiger 5; e) dorsal simple chaeta.Scale-bar: a‒b: 0.20 mm; c‒d‒e: 7 µm.

FIGURE 4. Exogone sophiae n. sp. Paratype (MSNP: P/001/SEM) a) Prostomium in dorsal view, showing the absence of antennae; b) anterior end in ventral view; c) anterior parapodia in ventral view; d) spiniger-like chaeta from chaetiger 2; e) falciger-like chaetae from chaetiger 2.

FIGURE5. Parexogone wolfiSan Martín,1991 (St. 8, 110 m).a) anteriorend in dorsal view; b) compound chaetae.Scale-bar: a: 0.30 mm; b‒d:15 µm.

FIGURE 6. Prosphaerosyllis danovaroi n. sp. Holotype (MSNP: P/253/V): a) anterior end in dorsal view; b) close-up of the prostomium, dorsal view; c) compound chaetae; d) dorsal simple chaeta; e) ventral simple chaeta; f) acicula.Paratype (MSNP: P/239/V): g) anterior end in dorsal view. Scale-bar:a, g: 0.10 mm; b: 60 µm; c‒f: 6 µm.

FIGURE7. Syllis profunda Cognetti, 1955.Holotype (SZN: SZN-POL31, Grotta Azzurra, 100 m):a) compound chaetae from the anteriorpart of thebody; b) aciculae from the anterior part of the body; c) compound chaetae from the midbody; d) aciculae from the midbody; e) compound chaetaefrom the posterior part of the body; f)acicula from the posterior part of thebody.Nontype individual (St.9, 180 m):g) anterior end in dorsal view.Scale-bar:a‒f: 30µm; g: 0.40 mm