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    Bicornucandona gen. nov., sp nov (crustacea, ostracoda) from finegan springs (Texas, USA)
    (Magnolia Press, 2011) Külköylüoğlu, Okan; Gibson, Randy; Diaz, Peter H.; Colin, Jean-Paul
    A new freshwater ostracod genus, Bicornucandona gen. nov. and its type species (Bicornucandona fineganensis sp. nov.) are described from Finegan Springs, Texas, U. S. A. The new genus differs from the related genera in the presence of two horn-like structures on the dorsal margin of the left valve in both sexes. This is also the diagnostic character of the type species. Differences in the structure of the hemipenes and prehensile palps of the male, and the shapes of some other soft body parts also separate this genus from the related species. Taxonomic status of the new genus and species are compared and discussed with both living and fossil relatives.
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    On Schornikovdona gen. nov (Ostracoda, Candonidae) from rheocrene springs in Texas (USA)
    (Brill Academic Publishers, 2017) Külköylüoğlu, Okan; Yavuzatmaca, Mehmet; Akdemir, Derya; Diaz, Peter H.; Gibson, Randy
    A new candonid genus, Schornikovdona gen. nov., with its type species Schornikovdona bellensis sp. nov., is described from rheocrene springs of Bell County, Texas. It is designated to the tribe Candonini due to the smooth carapace surface, normal pore openings with sensory seta, the presence of a 5-segmented first antenna, two long sexual bristles on the second antenna in males, the narrowly fused terminal segment of the Md palp, a long penultimate segment of the Mxl palp, two long and one short setae on the terminal segment of T3, the absence of an "e" seta on T3, the presence of a posterior seta on the uropod, the presence of 5 + 2 rows of spines on Zenker's organ, and other characteristics found in the tribe. The main diagnostic characteristics separating the new genus from the other genera in the tribe are the shape of the carapace, the reduced numbers of segments in the first antenna, reduction or absence of exopodial setae in the second antenna, asymmetrical clasping organs, the uropod with one rod-shaped claw, the different shape of the hemipenis, and differences in parts of the chaetotaxy. Based on these differences, we propose Schornikovdona gen. nov. as a new genus, with the new species S. bellensis sp. nov., in the subfamily Candoninae in the family Candonidae.