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- Title
A new genus and new species of stygobitic copepod (Crustacea: Copepoda: Cyclopoida) from Thien Duong Cave in Central Vietnam, with a redescription of Bryocyclops anninae (Menzel, 1926).
- Authors
Sanoamuang, La-orsri; Boonyanusith, Chaichat; Brancelj, Anton
- Abstract
During a faunistic expedition of Thien Duong Cave in Central Vietnam, specimens of two species of cave-dwelling cyclopoid copepods, belonging to two genera, were encountered in a small pool filled by drip water that was well separated from other water bodies within the cave. One group of specimens was tentatively assigned to Bryocyclops anninae (Menzel, 1926), representing the first record of the genus in Vietnam. The other species was recognised as a new species, most similar to Graeteriella longifurcata Tran & Chang, 2013, which was originally described from a syphon lake in the same cave. Detailed analyses of the morphological characters of both species revealed that they both actually belong to a new genus, Pseudograeteriella, established herein. The new genus can be distinguished from the closely related European genus, Graeteriella Brehm, 1926, by characters on the P1-P5, in the structure of genital segment in females, and in the armament and proportions of furcal rami. The two species of the Pseudograeteriella, new genus, differ considerably from each other in their mouthparts, characters on the P1-P5, and furcal rami. A generic diagnosis for Pseudograeteriella, new genus, and a detailed description of P. longiaesthetascus, new species and redescription of B. anninae are provided.
- Subjects
VIETNAM; SOUTHEAST Asia; CALANOIDA; COPEPODA; CAVES; CRUSTACEA; BODIES of water; SPECIES; STALACTITES &; stalagmites; SPELEOTHEMS
- Publication
Raffles Bulletin of Zoology, 2019, Vol 67, p189
- ISSN
0217-2445
- Publication type
Article
- DOI
10.26107/RBZ-2019-0016