A new species of Nitocra Boeck, 1865 (Copepoda, Harpacticoida) from Vietnam

By

Tran, Ngoc-Son
Pham, Thi-Phuong
Phung, Khanh Chuyen
Gómez, Samuel

Type

Article

Date of Publication

2025-11-6

Original Publication

ZooKeys

Volume

1258

Pages

277--304

Subjects

groundwater fauna , Hyporheic zone , new species , Nitokra , Southeast Asia , species groups , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.1258.167766

 

Abstract

<br> An undescribed taxon of the species-rich genus<br> Nitocra<br> was found during a survey on the harpacticoid copepods from the hyporheic zone in Vu Gia–Thu Bon Rriver, Central Vietnam. The new species,<br> N. duyxuyenensis<br> sp. nov.<br> , is morphologically similar to the American<br> N. evergladensis<br> Bruno &amp; Reid, 2002. These two species can be separated by the number of marginal spinules on the anal operculum, the relative length of the baseoendopod of the female fifth leg, the structure of the antenna, the number of setae on the female fifth leg, the number of setae on the inner margin of the first endopodal segment of the second to fourth swimming legs of the males, and the number of setae on the third endopodal segment of the third swimming leg. Additionally, some comments on the groups and subgroups of the genus defined so far are given, with the proposal of the<br> lacustris<br> species subgroup for group III of Gómez et al. (2012).<br>