Scientia Marina, Vol 70, No S3 (2006)

Description of three new species of Ninoe and Cenogenus (Polychaeta: Lumbrineridae) from the Mexican Pacific


https://doi.org/10.3989/scimar.2006.70s381

Pablo Hernández-Alcántara
Laboratorio de Ecología y Biodiversidad de Invertebrados Marinos, Instituto de Ciencias del Mar y Limnología, UNAM, Mexico

Alma Yazmín Pérez-Mendoza
Laboratorio de Ecología y Biodiversidad de Invertebrados Marinos, Instituto de Ciencias del Mar y Limnología, UNAM, Mexico

Vivianne Solís-Weiss
Laboratorio de Ecología y Biodiversidad de Invertebrados Marinos, Instituto de Ciencias del Mar y Limnología, UNAM, Mexico

Abstract


In this study, 169 lumbrinerids of the genera Ninoe and Cenogenus from the sublittoral zone of the Gulf of California and Gulf of Tehuantepec were analysed. Previous records in these regions of the Mexican Pacific included five species of Ninoe (N. chilensis, N. foliosa, N. gemmea, N. longibranchia and N. moorei) and two of Cenogenus (originally identified as Ninoe fusca and N. fuscoides). Ninoe jessicae and N. marthae are newly described. They are characterized by the presence of multidentate hooded hooks from chaetiger 1 and at least 7 branchial filaments in the best developed branchiae. N. marthae n. sp. differs not only from N. jessicae n. sp. but also from the other species of the genus Ninoe, because only four teeth are present in maxilla II, while in all the other described species, 6-8 teeth are present there. The new species Cenogenus eliae is characterized by the presence of branchiae starting at chaetigers 32-51 and simple multidentate hooded hooks in all parapodia.


Keywords


Polychaete; new species; Lumbrineridae; Ninoe; Cenogenus; Mexican Pacific

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