Phialella belgicae (Hartlaub, 1904) (Fig. 7d) Material examined. ANT XV/3: 48-27, several hydrothecae, on E. generale, H. exaggeratum, S. lobata, Sy. anae and Sy. glacialis; 48-33, several hydrothecae, on C. hicksoni and O. terranovae; 48-36, some hydrothecae, on O. terranovae; 48-39, several hydrothecae, on dead octocoral; 48-44, some hydrothecae, on A. elongatus, Sy. naumovi and bryozoan; 48-50, numerous hydrothecae, on C. hicksoni, H. secundum, Sc. nana and bryozoan; 48-63, some hydrothecae, on Staurotheca frigida Peña Cantero, Svoboda & Vervoort, 1997; 48-77, numerous hydrothecae, on H. jaederholmi; 48-82, numerous hydrothecae, on B. subrufa, Sy. glacialis and Staurotheca polarsterni Peña Cantero, Svoboda & Vervoort, 1997; 48-168, two hydrothecae, on Sy. weddelli; 48-220, numerous hydrothecae and erect stems, up to 2.5 mm high, on C. hicksoni, H. interpolatum, Sc. nana, Sy. exochus and Sy. plectilis; 48-276, several hydrothecae, on C. hicksoni, Halecium cf. antarcticum and Sc. nana; ANT XVII/3: 111-7, several hydrothecae, on O. terranovae and Sy. cumberlandicus; 111-9, numerous hydrothecae, on A. grandis, E. generale, R. antarcticum and T. longstaffi; 111-19, some hydrothecae, on H. interpolatum and Tubularia sp.1; ANT XXI/2: PS65/39, some hydrothecae, on Sc. nana, Sy. exochus and polychaete tube, with gonothecae; PS65/121, few hydrothecae, on Antarctoscyphus spiralis (Hickson & Gravely, 1907); PS65/132, some hydrothecae, on B. subrufa; PS65/175, three hydrothecae, on A. elongatus; PS65/237, several hydrothecae, on Halecium cf. antarcticum, Sc. nana and Sy. glacialis; PS65/248, one hydrotheca, on indeterminate hydrorhiza; PS65/274, several hydrothecae, on St. nonscripta; PS65/278, few hydrothecae, on H. secundum and sponge; PS65/281, some hydrothecae, on Sy. curvatus; PS65/292, several hydrothecae, on dead octocoral and bryozoan; PS65/336, some hydrothecae, on Staurotheca pachyclada (Jäderholm, 1904). Ecology and distribution. Species previously reported from the low tide (Billard 1914, as Campanulina belgicae) to 779 m depth (Peña Cantero 2014a); present material was collected from 62 to 598 m. Probably a Pan- Antarctic species (Peña Cantero et al. 2013).

Published as part of Soto, Joan J. & Peña, Álvaro L., 2019, Benthic hydroids (Cnidaria, Hydrozoa) from the Weddell Sea (Antarctica), pp. 1-78 in Zootaxa 4570 (1) on page 25, DOI: 10.11646/zootaxa.4570.1.1, http://zenodo.org/record/2608527