Eudendrium scotti Puce, Cerrano & Bavestrello, 2002

Soto, Joan J. & Peña, Álvaro L., 2019, Benthic hydroids (Cnidaria, Hydrozoa) from the Weddell Sea (Antarctica), Zootaxa 4570 (1), pp. 1-78 : 12

Eudendrium scotti Puce, Cerrano & Bavestrello, 2002

( Fig. 3i, k )

Material examined. ANT XV/3: 48-150, one colony, c. 80 mm high, on sponge, with male gonophores; 48-222, one stem, c. 25 mm, on Sy. weddelli , with female gonophores; ANT XXI/2: PS65/276, few stems, up to 6 mm, on St. vanhoeffeni .

Remarks. Cnidome comprising large macrobasic euryteles [range 22.0–24.5 x 9.0–10.0 µm, mean 23.3±1.1 x 9.2±0.4 µm (n=20)] and small microbasic euryteles [range 8.0–10.5 x 3.5–4.5 µm, mean 8.9±0.8 x 4.2±0.4 µm (n=18)].

Ecology and distribution. Species previously reported from depths between 10 ( Puce et al. 2002) and 397 m (Peña Cantero 2017); present material between 234 and 758 m depth, considerable extending its bathymetric range. Circum-Antarctic species (Peña Cantero 2009), previously unreported from the Weddell Sea.

Figures

FIGURE 3. a–f Hydractinia dendritica: a–b general view of the colony; c detail of spines; d gastrozooids and dactylozooid (arrow); e gonozooid with gonophores; f dactylozooid (arrow). g Eudendrium antarcticum: female gonophore. h Eudendrium generale: female gonophore. i, k Eudendrium scotti: i gonozooid with male gonophores; k colony. j Eudendrium sp.2: gonozooid with male gonophores.