Additions to knowledge of the biodiversity of benthic hydroids (Cnidaria: Hydrozoa) in the Balleny Islands (Antarctica) Author Peña Cantero, Álvaro L. text Zootaxa 2021 2021-05-04 4966 3 321 336 journal article 6521 10.11646/zootaxa.4966.3.4 67f48cde-c614-4032-8c46-e21235b87124 1175-5326 4736691 F4CABF6C-1993-4112-A03E-4DBF708BB025 Lafoea dumosa ( Fleming, 1820 ) ( Fig. 1D ) Material examined. TAN 0602/442 , a 12-mm-high stem ( NIWA 144244). Remarks. The present material agrees with that frequently reported in Antarctic waters. The hydrotheca, provided with a ringed pedicel, is roughly 700 µm high and 150 µm in diameter at aperture. The isorhizas are around 22 x 9 µm , coinciding with one of the two morphotypes found by Schuchert (2001) in relation to the size of the isorhizas. Ecology and distribution. The material, which represents the first record of the species for the Balleny Islands, was collected at a depth of 140−150 m off Buckle Island.