Tovar-Hernández, M.A.; Salazar-Vallejo, S.I. (2008). Caruncle in Megalomma Johansson, 1925 (Polychaeta: Sabellidae) and the description of a new species from the Eastern Tropical Pacific. Journal of Natural History. 42(29): 1951-1973.

141936

10.1080/00222930802140186 [view]

Tovar-Hernández, M.A.; Salazar-Vallejo, S.I

2008

42(29): 1951-1973

Publication

http://dx.doi.org/10.1080/00222930802140186

World Polychaeta Database (WPolyDb)

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.

Eastern Pacific warm temperate to tropical

Morphology
Systematics, Taxonomy

Annelida
Polychaeta

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