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
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 Eleutheri...
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| Format: | Article |
| Language: | English |
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Consortium of European Natural History Museums
2024-02-01
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| Series: | European Journal of Taxonomy |
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| Online Access: | http://www.europeanjournaloftaxonomy.eu/index.php/ejt/article/view/2433 |
| _version_ | 1797301867607228416 |
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| author | José María Ahuatzin-Hernández Pablo Alberto Hernández-Solís Lorena Violeta León-Deniz |
| author_facet | José María Ahuatzin-Hernández Pablo Alberto Hernández-Solís Lorena Violeta León-Deniz |
| author_sort | José María Ahuatzin-Hernández |
| collection | DOAJ |
| description |
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.
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| first_indexed | 2024-03-07T23:28:37Z |
| format | Article |
| id | doaj.art-630a442ae7e54201ad0607dc8e65d37f |
| institution | Directory Open Access Journal |
| issn | 2118-9773 |
| language | English |
| last_indexed | 2024-03-07T23:28:37Z |
| publishDate | 2024-02-01 |
| publisher | Consortium of European Natural History Museums |
| record_format | Article |
| series | European Journal of Taxonomy |
| spelling | doaj.art-630a442ae7e54201ad0607dc8e65d37f2024-02-20T23:38:33ZengConsortium of European Natural History MuseumsEuropean Journal of Taxonomy2118-97732024-02-01921110.5852/ejt.2024.921.2433First 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 hydromedusaJosé María Ahuatzin-Hernández0Pablo Alberto Hernández-Solís1Lorena Violeta León-Deniz2Laboratorio de Patología Acuática, Departamento de Recursos del Mar, Centro de Investigación y de Estudios Avanzados del IPN Unidad Mérida, Mérida 97319, Yucatán, MexicoUnidad Multidisciplinaria de Docencia e Investigación, Facultad de Ciencias, Unidad Sisal, Universidad Nacional Autónoma de México, Sisal 97356, Yucatán, MexicoDepartamento de Biología Marina, Facultad de Medicina de Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Mérida 97100, Yucatán, Mexico 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. http://www.europeanjournaloftaxonomy.eu/index.php/ejt/article/view/2433MedusozoaMexicoAnthoathecataYucatan |
| spellingShingle | José María Ahuatzin-Hernández Pablo Alberto Hernández-Solís Lorena Violeta León-Deniz 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 European Journal of Taxonomy Medusozoa Mexico Anthoathecata Yucatan |
| title | 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 |
| title_full | 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 |
| title_fullStr | 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 |
| title_full_unstemmed | 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 |
| title_short | 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 |
| title_sort | 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 |
| topic | Medusozoa Mexico Anthoathecata Yucatan |
| url | http://www.europeanjournaloftaxonomy.eu/index.php/ejt/article/view/2433 |
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