TY - JOUR A1 - Ahuatzin-Hernández, José María A1 - Hernández-Solís, Pablo Alberto A1 - León-Deniz, Lorena Violeta T1 - First record of the genus Staurocladia (Hydrozoa: Cladonematidae) in the Gulf of Mexico with the description of Staurocladia dzilamensis sp. nov., a new species of crawling hydromedusa T2 - European journal of taxonomy N2 - The Cladonematidae are a family of hydrozoans with a worldwide distribution and morphological adaptations for a benthic mode of life. Species of this family are characterized by high morphological variability, which has caused many taxonomical debates, mainly for the species of the genera Eleutheria Quatrefages, 1842 and Staurocladia Hartlaub, 1917. Herein, we describe Staurocladia dzilamensis sp. nov., a new species of crawling hydromedusa from the southern Gulf of Mexico. This finding also constitutes the first record of the genus Staurocladia for the Gulf of Mexico. The presence of additional nematocyst clusters, supplementing the apical one on the upper branch of the tentacles, places it within Staurocladia. The presence of exumbrellar buds, a conspicuous marginal ring of nematocysts, 6–11 bifid tentacles with lower branches longer than their upper counterpart, the cnidome with stenoteles of two size classes, and two nematocyst clusters on the upper branch supplementing the apical one, opposite placed alternately on its aboral and oral sides permits to differentiate S. dzilamensis from its congeners. A taxonomic key for the species of Staurocladia is provided. T3 - European journal of taxonomy : EJT - 921:251-275 KW - Medusozoa KW - Mexico KW - Anthoathecata KW - Yucatan Y1 - 2024 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/73645 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-736454 SN - 2118-9773 VL - 2024 IS - 921 SP - 251 EP - 275 PB - Muséum National d'Histoire Naturelle CY - Paris ER -