Description of a new tribe Cabralcandonini (Candonidae,Ostracoda) from karst aquifers in central Texas, U.S.A

Cabralcandonini tribe n., with the type genus Cabralcandona gen. n. from an artesian well in the San Marcos, Texas (U.S.A.) and six other genera from karst aquifers in Texas, is proposed as a new tribe of the subfamily Candoninae (Candonidae) (Crustacea, Ostracoda). The new tribe and genus have morp...

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Bibliographic Details
Published in:Journal of caves and karst studies 2019-06, Vol.81 (2), p.136-151
Main Authors: Kulkoyluoglu, Okan, Yavuzatmaca, Mehmet, Akdemir, Derya, Schwartz, Benjamin, Hutchins, Benjamin
Format: Article
Language:English
Subjects:
Animal appendages
Aquatic crustaceans
Aquifers
Biodiversity
Biogeography
Carapace
Cleaning
Diagnostic systems
Ecology
Flagella
Genera
Groundwater
Karst
Lesions
Morphology
Muscles
Museums
Ornamentation
Scars
Setae
Shape
Taxonomy
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Description
Summary:Cabralcandonini tribe n., with the type genus Cabralcandona gen. n. from an artesian well in the San Marcos, Texas (U.S.A.) and six other genera from karst aquifers in Texas, is proposed as a new tribe of the subfamily Candoninae (Candonidae) (Crustacea, Ostracoda). The new tribe and genus have morphological features that distinguish them from other members of the subfamily. The most diagnostic characteristics of the type genus are (1) two horn-like structures developed on the antero- and postero-dorsal margins of the left valve, (2) numbers of central muscle scars, (3) hexagonal or pentagonal (honeycomb-like) ornamentation on the subrectangular shaped carapace, (4) four segmented second antenna in both sexes, (5) absence of an exopod on A2, (6) shape and size of Y aesthetasc, (7) absence of e, f and g setae on cleaning leg, (8) flagellum (whip-like) uropod morphology, (9) shape of hemipenis, and (10) reduction in number of segments and setae on other limbs. Taxonomic keys for the tribes of the subfamily Candoninae including Cabralcandonini tribe n. are presented.
ISSN:1090-6924
2331-3714
DOI:10.4311/2019LSC0101