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Autolytinae from Peru: description of Myrianida paredesi sp. nov. and new records of Myrianida pentadentata (Imajima, 1966), and Proceraea micropedata (Hartmann-Schröder, 1962)

Published online by Cambridge University Press:  21 December 2015

Luis Aguirre ,
Guillermo San Martín  and
Patricia Álvarez-Campos
Luis Aguirre*
Affiliation:
Laboratorio de Biología y Sistemática de Invertebrados Marinos (LaBSIM), Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos, Apdo. 1100–58 Lima 11, Peru The Environment Management S.A.C., Los Olivos Lima, Peru
Guillermo San Martín
Affiliation:
Departamento de Biología (Zoología), Facultad de Ciencias, Cantoblanco, Universidad Autónoma de Madrid, 28049 Madrid, Spain
Patricia Álvarez-Campos
Affiliation:
Departamento de Biología (Zoología), Facultad de Ciencias, Cantoblanco, Universidad Autónoma de Madrid, 28049 Madrid, Spain
*
Correspondence should be addressed to:L. Aguirre, Laboratorio de Biología y Sistemática de Invertebrados Marinos (LaBSIM), Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos, Apdo. 1100–58 Lima 11, Peru email: luis.aguirre.mendez@gmail.com
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Abstract

A new species, Myrianida paredesi, and new records of Myrianida pentadentata (Imajima, 1966), and Procerarea micropedata (Hartmann-Schöder, 1962), are described from the central coast of Peru. Myrianida paredesi is characterized by the presence of an additional mid-dorsal, digitiform structure, quite similar to a dorsal cirrus (unique among all syllids), a subtriangular prostomium with a posterior region extended to middle peristomium, pharynx with a single elongated sinuation and a trepan with 14–15 equal teeth in a single ring. Descriptions of male and female stolons are also provided. The phylogenetic position of the new species within Myrianida is determined using molecular data, suggesting it is closely related to the species that share the presence of one ciliary troch per segment (except M. pachycera; unknown in M. australiensis), moderate number of equal teeth on trepan (except M. pachycera), and the mode of reproduction.

Descriptions of the collected specimens of Myrianida pentadentata (Imajima, 1966), and Proceraea micropedata (Hartmann-Schröder, 1962), both new reports to Peru, are also included.

Keywords

AnnelidaSyllidaeAutolytinaeMyrianidaProceraeanew speciesreproductiontaxonomyphylogeny
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 96 , Issue 8 , December 2016 , pp. 1633 - 1649
Copyright
Copyright © Marine Biological Association of the United Kingdom 2015 

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