<i>Rugosuscandona</i>, a New Genus of Candonidae (Crustacea: Ostracoda) from Groundwater Habitats in Texas, North America

Abstract

http://zoobank.org/CD308AA8-CCA0-4831-B7CB-3052E946588FRugosuscandona scharfi gen. nov. sp. nov. is described as a new genus of the family Candonidae from groundwaters of Texas, USA. The new genus differs from its congeners based on the presence of relatively long pore canals with sensory seta on the carapace surface, 6-segmented first antenna (A1), absence of bristles (t setae untransformed) and z setae on second antenna (A2), distinctly shaped male hemipenis and clasping organs, a simple claw-like uropod, and presence of 4+2 whorls on the Zenker's organ. Additionally, reduction in the number of setae and segments of the other soft body parts can be used to differentiate between the new genus Rugosuscandona gen. nov. and its congeners. Therefore, the new genus is currently monotypic. Taxonomic status of the new genus is discussed and compared with living genera of the family.

A new genus, Tuberocandona gen. nov. (Crustacea, Ostracoda, Candonidae) and past to present ostracod species diversity in Texas (USA)

“…In addition to the pits, fine reticulations (cf. Paracandona) (Karanovic 2012), wrinkle-shaped ornamentations (see Rugosuscandona, Cabralcandona) (Külköylüoğlu et al 2017b(Külköylüoğlu et al , 2019, and even bump-shaped ornamentations (see Ufocandona) along with variety of microreticulations (Külköylüoğlu et al 2017e) are known. However, the formation of tubercules with dense spines such as occur in Tuberocandona gen. nov. are not known in the subfamily Candoninae where the carapace is mostly described as smooth, pearly lustre, and/or translucent in appearance (Meisch 2000;Karanovic 2004).…”

A reassessment of the origin and distribution of the subterranean genus Pseudolimnocythere Klie, 1938 (Ostracoda, Loxoconchidae), with description of two new species from Italy

“…Following Meisch et al (2019), freshwaters host 2,330 accepted species of ostracods assigned to 270 genera of the order Pocodocopida, living both in surface than subterranean waters. In recent years, several papers reported the description of the poorly known subterranean ostracod faunas from different parts of the world (e.g., Karanovic 2007;Reeves et al 2007;Smith 2011;Peterson et al 2013;Iepure et al 2016;Külköylüoğlu et al 2017;Mazzini et al 2017;Pociecha et al 2021).…”

Stygobiont Diversity in the San Marcos Artesian Well and Edwards Aquifer Groundwater Ecosystem, Texas, USA

“…A third phase of biologic investigation began in the mid-2010s, when Benjamin Schwartz became director of the EARDC upon Longley's retirement. Schwartz also facilitated systematic sampling and taxonomic collaborations, most importantly with Okan Külköylüoglu (Ostracoda) [18][19][20][21][22][23]. He also initiated morphometric and molecular analyses [23,24] to identify new records of previously described species.…”