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Issue: Vol. 5590 No. 1: 20 Feb. 2025
Type: Article
Published: 2025-02-20
DOI: 10.11646/zootaxa.5590.1.2
Page range: 46-60
Abstract views: 90
PDF downloaded: 5

A new species of Nitokra Boeck, 1865 (Copepoda: Harpacticoida: Ameiridae) from a hyporheic zone in central Vietnam

Faculty of Biology and Environmental Sciences; The University of Danang - University of Science and Education; 459 Ton Duc Thang St.; Danang City 550000; Vietnam
Faculty of Biology and Environmental Sciences; The University of Danang - University of Science and Education; 459 Ton Duc Thang St.; Danang City 550000; Vietnam
Faculty of Biology and Environmental Sciences; The University of Danang - University of Science and Education; 459 Ton Duc Thang St.; Danang City 550000; Vietnam
National Institute of Biology; Večna pot 121; 1000 Ljubljana; Slovenia
Crustacea Copepoda taxonomy Vietnam Southeast Asia hyporheic zone

Abstract

A new species of harpacticoid copepod, Nitokra quangnamensis sp. nov. was collected from a hyporheic zone of a river in the central part of Vietnam. It is the second member of the genus described from Vietnam. It belongs to the group III (Gómez et al. 2012), where members have a seta on inner margin of P1 Exp-2 and five setae/spines on P1 Exp-3. The group is also characterized by the number of elements (spines/setae) as: P2–P4 Enp-3 with 4,5,5 elements, P2–P4 Exp-3 with 7,7,7 elements and P2–P4 Enp-1 with 1,1,1 seta on inner margin. The most closely-related species, N. laingensis Fiers, 1986, differs from the new species in: i) N. quangnamensis sp. nov. has seven setae in female P5 Exp, but five setae in N. laingensis; ii) distal segment of a mandibular palp in the new species with six elements, vs. five in N. laingensis; iii) male anal operculum of the new species with six spines, vs. four in N. laingensis.

 

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