Staurotheca pachyclada ( Jäderholm, 1904 )

Soto, Joan J. & Peña, Álvaro L., 2019, Benthic hydroids (Cnidaria, Hydrozoa) from the Weddell Sea (Antarctica), Zootaxa 4570 (1), pp. 1-78 : 31

Staurotheca pachyclada ( Jäderholm, 1904)

( Fig. 9 g–h)

Material examined. ANT XV/3: 48-77, one colony, c. 50 mm high, with female gonothecae; 48-154, one colony, c. 45 mm high; 48-220, one colony, c. 25 mm high, with female gonothecae; 48-222, one colony, c. 25 mm high; ANT XXI/2: PS65/237, several stems, c. 130 mm high; PS65/265, several stems, c. 125 mm high, on gravel, with female gonothecae; PS65/336, one colony, c. 85 mm high.

Ecology and distribution. Previously found at depths from 42 ( Stepanjants 1979, as Thuiaria juncea ) to 1990 m (Peña Cantero in press); present material at 267– 583 m. Species with a circum-Antarctic distribution ( Peña Cantero & Vervoort 2003).

Figures

FIGURE 9. a Staurotheca antarctica: stem showing hydrothecal arrangement. b St. dichotoma: stem showing hydrothecal arrangement; c–d St. frigida: c stem with male gonothecae; d stem with female gonotheca. e St. glomulosa: hydrotheca. f St. nonscripta: stem showing hydrothecal arrangement. g–h St. pachyclada: g stem showing hydrothecal arrangement; h hydrotheca. i–j St. vanhoeffeni: i colony; j stem showing hydrothecal arrangement. k St. polarsterni: stem showing hydrothecal arrangement and female gonothecae.