Description of three new species of &lt;i&gt;Ninoe and Cenogenus&lt;/i&gt; (Polychaeta: Lumbrineridae) from the Mexican Pacific

Vivianne Solís-Weiss,Pablo Hernández-Alcántara,Alma Yazmín Pérez-Mendoza

doi:10.3989/scimar.2006.70s381

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

Vivianne Solís-Weiss, Pablo Hernández-Alcántara + Show 1 more

Open Access

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

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Journal: Scientia Marina	Publication Date: Dec 30, 2006
Citations: 7	License type: cc-by

Affiliation: Institut de Ciències del Mar

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.

Highlights

The family Lumbrineridae is characterized by long, cylindrical, free-living burrowing polychaetes, with essentially identical chaetigers
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 from N. jessicae n. sp. and 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

Summary

Introduction

The family Lumbrineridae is characterized by long, cylindrical, free-living burrowing polychaetes, with essentially identical chaetigers. Their morphological homogeneity and the reduced number of external characteristics make it difficult to separate the genera taxonomically (Oug, 2002). In 1865 Kinberg established the Genus Ninoe to include the eunicemorphs with no prostomial appendices or tentacular cirri and with branchiae arising from the postchaetal lobes in anterior parapodia. He included three species from Chile and Brazil: N. chilensis, N. brasiliensis and N. oculata.

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