Description of two new species of Rissoella Gray, 1847 (Mollusca, Gastropoda, Heterobranchia) from Venezuela, with a key to the Caribbean species known for the genus
| Autor: | Jesus Ortea, Manuel Caballer, Samuel Narciso |
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| Rok vydání: | 2011 |
| Předmět: |
new species
Hypobranchial gland biology Rissoellidae Ecology Thalassia Zoology Morrocoy Venezuela biology.organism_classification Article Thalassia testudinum lcsh:Zoology Gastropoda Protoconch Dictyota Animal Science and Zoology Taxonomy (biology) Southern Caribbean lcsh:QL1-991 Rissoella Isla de Aves Heterobranchia Ecology Evolution Behavior and Systematics |
| Zdroj: | ZooKeys, Vol 115, Iss 0, Pp 1-18 (2011) ZooKeys 115: 1-18 WOK RUO. Repositorio Institucional de la Universidad de Oviedo instname ZooKeys |
| ISSN: | 1313-2970 1313-2989 |
| DOI: | 10.3897/zookeys.115.1163 |
| Popis: | Two new species of the genus Rissoella Gray, 1847 are described from Venezuela, one from the National Park Morrocoy, Rissoella morrocoyensis sp. n. and the other from the Wildlife Refuge Isla de Aves, Rissoella venezolanicola sp. n. R. morrocoyensis sp. n. has a deep umbilicus (partly closed), preumbilical cord, black head, hypobranchial gland marked by a pale yellow boomerang-shaped ribbon and it lives on the leaves of the seagrass Thalassia testudinum Banks & König, 1805. R. venezolanicola sp. n. has an angled preumbilical cord which extends to the columella delimiting a trapezoid, a hypobranchial gland marked by a yellow quaver-shaped ribbon and protoconch with fuchsia highlights. It lives on the brown alga Dictyota spp. The records of Rissoella in the Caribbean are revised and illustrations, a comparative table and a key to the Caribbean species known for the genus are provided. |
| Databáze: | OpenAIRE |
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