On some tropical hydroids (Cnidaria: Hydrozoa), with descriptions of four new species Author Galea, Horia R. Hydrozoan Research Laboratory, 405 Chemin Les Gatiers, 83170 Tourves, France. Author Maggioni, Davide Università degli Studi di Milano-Bicocca, Dipartimento di Biotecnologie e Bioscienze, Piazza della Scienza 2, 20126 Milano, Italy. & Marine Research and Higher Education (MaRHE) Center, Università degli Studi di Milano-Bicocca, 12030 Faafu Magoodhoo, Maldives. text Zootaxa 2024 2024-03-20 5428 1 1 57 http://dx.doi.org/10.11646/zootaxa.5428.1.1 journal article 10.11646/zootaxa.5428.1.1 1175-5326 10842930 041905ED-FCED-4ED5-8248-E9AA8D6271E9 Anthoathecata : Aplanulata: Tubulariidae Ectopleura viridis ( Pictet, 1893 ) is sister to all other Ectopleura species included in the analyses, but the nodal support of the genus based on 16S rRNA data is low ( Fig. 24A ). Of note, sequences obtained from specimens of E. dumortierii ( Van Beneden, 1844 ) from Chile ( Galea 2007: 31 ) and France (Atlantic Ocean) are here demonstrated to belong to different species, not forming a monophyletic clade and showing a high genetic distance of 12.7% between them.