First record and range extension of the deep-sea urchin Hygrosoma petersii (A. Agassiz, 1880) (Echinodermata, Echinoidea) for the southern Caribbean
Primer registro y extensión del rango de distribución del erizo de mar profundo Hygrosoma petersii (A. Agassiz, 1880) (Echinodermata, Echinoidea) para el Caribe sur
DOI:
https://doi.org/10.25268/bimc.invemar.2022.51.1.1168Keywords:
Deep-Sea, Colombian Caribbean, Echinothuriidae, tridentate pedicellariae, sphaeridia.Abstract
Hygrosoma petersii (A. Agassiz, 1880) is a regular deep-sea urchin from the family Echinothuriidae that has undergone numerous taxonomic changes throughout history. It is characterized by the presence of tridentate pedicellariae with spoon-shaped valves with a serrated edge. The geographic distribution of Hygrosoma petersii is extended to the Colombian Caribbean, as the southernmost record of the Caribbean Sea. Species description and, for the first time, Scanning Electron Microscopy (SEM) photographs of its pedicellariae and sphaeridia are presented, comparing it with its Caribbean congeners.
References
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