Staurodiscus Haeckel 1879

Staurodiscus is a genus of hydrozoans belonging to the family Hebellidae.

The species of this genus are found in Atlantic, Pacific and Indian Ocean.

Life cycle, polyp stage see Migotto & Andrade (2000), perhaps Staurodiscus kellneri (Mayer, 1910)

Medusa with 4 or more main primary radial canals, some or all branching one or more times, primary canal and some or all of the branches reaching circular canal; ‘gonads on primary radial canals and branches; numerous tentacles and cordyli; with or without cirri; with or without ocelli. Hydroid epizootic, Hebella-like; hydrothecae almost conical when growing on upper part of the host, cylindrical when growing on lower part of same host; asymmetrical to symmetrical; with everted margin, sharply or slightly oblique, with short to long, wrinkled or annulated pedicels; with membranous diaphragm (sometimes absent) and annular thickening; gonophores as free medusae; gonotheca as big or slightly bigger than hydrotheca, with four opercular flaps, on short pedicel, slightly undulated walls, truncated distally, tapering at base, containing up to three medusae.