Siamcyclops isanus sp. nov. (Copepoda, Cyclopoida, Cyclopidae), a new cave-dwelling species from northeastern Thailand

By

Watiroyram, Santi
Koompoot, Kamonwan

Type

Article

Date of Publication

2024

Original Publication

Subterranean Biology

Volume

49

Pages

185--200

Subjects

Groundwater , Indo-Burma region , limestone cave , taxonomy , unsaturated zone

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/subtbiol.49.135303

 

Abstract

Siamcyclops isanussp. nov. has been found from a cave in northeastern Thailand. It differs from the other member of its genus by having: 1) smooth free margin of anal operculum, 2) a different armature on the second endopod of the first and fourth legs, 3) the armature of the second endopod of the male third leg, and 4) the shape of spermatophore. The discovery of the second species from the genus Siamcyclops thus leads to the proposal for the generic diagnosis. The morphological differences between the genus Siamcyclops and other closely related genera is added.