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Caruncle in megalomma johansson, 1925 (Polychaeta: Sabellidae) and the description of a new species from the Eastern Tropical Pacific

Por: Tovar Hernández, María Ana [autor/a].
Salazar Vallejo, Sergio I [autor/a].
Tipo de material: Artículo ArtículoTema(s): Megalomma carunculata | Polychaeta | Morfología animalDescriptor(es) geográficos: Acapulco de Juárez (Guerrero, México) Nota de acceso: Disponible para usuarios de ECOSUR con su clave de acceso En: Journal of Natural History. volumen 42, número 29-30 (August 2008), páginas 1951-1973. --ISSN: 0022-2933Número de sistema: 41642Resumen:
Inglés

The presence of a caruncle in the polychaete family Sabellidae is documented. It is placed dorsally above the mouth, between the dorsal lips, supported with hyaline cartilage constituted by a homogeneous eosinophilic matrix and it is innervated directly from the cerebral ganglion. The caruncle surface has four longitudinal ciliated bands; the cilia from the lateral bands are hypertrophied, wider distally, tongue-like, forming a ciliated curtain or membranella. The genus Megalomma is emended based on the presence of a caruncle, a long dorsalmost radiolar pair, a high number of radiolar skeletal cells, and the presence of interramal eyespots. We describe a new species from Acapulco in the Tropical Eastern Pacific -Megalomma carunculata sp. nov. It has a caruncle, subtriangular ventral lappets, well developed dorsal pockets, compound eyes in all radioles, and interramal eyespots in the thoracic and abdominal segments.

Lista(s) en las que aparece este ítem: Guerrero
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Disponible para usuarios de ECOSUR con su clave de acceso

The presence of a caruncle in the polychaete family Sabellidae is documented. It is placed dorsally above the mouth, between the dorsal lips, supported with hyaline cartilage constituted by a homogeneous eosinophilic matrix and it is innervated directly from the cerebral ganglion. The caruncle surface has four longitudinal ciliated bands; the cilia from the lateral bands are hypertrophied, wider distally, tongue-like, forming a ciliated curtain or membranella. The genus Megalomma is emended based on the presence of a caruncle, a long dorsalmost radiolar pair, a high number of radiolar skeletal cells, and the presence of interramal eyespots. We describe a new species from Acapulco in the Tropical Eastern Pacific -Megalomma carunculata sp. nov. It has a caruncle, subtriangular ventral lappets, well developed dorsal pockets, compound eyes in all radioles, and interramal eyespots in the thoracic and abdominal segments. eng

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