TY - JOUR AB - 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. A1 - Tovar-Hernández, M.A. A1 - Salazar-Vallejo, S.I DO - 10.1080/00222930802140186 JO - Journal of Natural History N1 - World Polychaeta Database (WPolyDb) IS - 29 SP - 1951 EP - 1973 C1 - 42(29): 1951-1973 TI - Caruncle in Megalomma Johansson, 1925 (Polychaeta: Sabellidae) and the description of a new species from the Eastern Tropical Pacific UR - http://dx.doi.org/10.1080/00222930802140186 VL - 42 PY - 2008 Y2 - 2024-03-28 ER -