First record and distribution of Pisione longispinulata Aguado & San Martín (Annelida: Polychaeta: Pisionidae) in the Mexican Pacific coasts

Abstract

Pisione longispinulata is newly recorded from the Mexican Pacific and is the first record outside its type locality, Coiba Island, Panamá, Pacific. Six specimens of the species were collected in the sandy soft bottoms of the intertidal zone of the Oaxaca coasts. The individuals found were three males and three specimens in which the sexual characters could not be distinguished. The holotype and two paratypes from the type locality of the species were also examined, and a short taxonomic note about their diagnostic characters is presented.

Keywords:

• Mexican Pacific
• new record
• Pisione longispinulata
• Pisionidae
• Polychaeta

Acknowledgements

We would especially like to thank Javier Sánchez Almazán, curator of the Museo Nacional de Ciencias Naturales de Madrid (MNCN-CSIC), for his help and support with obtaining the type material on loan for this study, and Yolanda Hornelas Orozco for her help with the SEM photographs.