Complementary description of Peltidium nayarit (Copepoda, Harpaticoida, Peltidiidae) and a new record at Revillagigedo Archipelago, Mexico

By

Palomares-García, José Ricardo
Gómez-Gutiérrez, Jaime

Type

Article

Date of Publication

2024

Original Publication

ZooKeys

Volume

1214

Pages

187--195

Subjects

Crustacean fauna , Harpaticoida , marine copepods , range extension , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.1214.132950

 

Abstract

Four adult females of a rare benthic/epiphytic harpacticoid copepod species of the genus Peltidium Philippi, 1839 were collected from insular zooplankton samples obtained at Revillagigedo National Park, Mexico. They were identified as Peltidium nayarit Suárez-Morales & Jarquín-González, 2013 with type location (and the single previously known distribution site) at Playa Careyeros (20°46'59.46'N, 105°30'35.48'W), Nayarit, Mexico. We provide a complementary description of this species including new details of antennules, caudal rami, legs 1 and 5, and cuticular ornamentation using scanning electron microscopy observations. Peltidium nayarit has a dark reddish-pink coloration allegedly mimicking the color of the macroalgae where they live, but specimens collected in the present study were obtained from sea surface zooplankton net tows. The record of Peltidium nayarit in the Revillagigedo Islands represents the southwestern-most record of the genus in the Americas and the second record for Mexico.