Revision of the taxonomic position ofPseudocyprettaKlie, 1932 (Ostracoda: Cyprididae), with a redescription ofP. maculataKlie, 1932

Abstract

AbstractPseudocypretta maculata Klie, 1932, type species of the genus, is redescribed based on new material from Thailand. The main diagnostic features of the species are the presence of marginal septa, presence of Wouters organ on the first antenna, strongly serrated claw G2 of the second antenna (A2), small β seta on the mandibular palp, elongated terminal segment of the maxillular palp, smooth and large bristles on the third endite of the maxillula, undivided penultimate segment of the second thoracopod (T2), absence of d1 seta on the T2, completely separated terminal segment of the third thoracopod, absence of a pincer organ, and reduced caudal ramus with a triangular base. The taxonomic position of PseudocyprettaKlie, 1932 is also revised. Based on molecular analysis using the cytochrome c oxidase subunit I (COI), Pseudocypretta appears closer to Cypridopsinae Kaufmann, 1900 than to Cyprettinae Hartmann, 1971. This result is congruent with morphological evidence and, among other cypridopsine genera, Pseudocypretta shows highest similarity with CyprettadopsisSavatenalinton, 2020 given its reduced caudal ramus, the strongly serrated claw G2 of the A2, absence of pincer organ, and presence of marginal septa. Pseudocypretta is therefore allocated to the tribe Cyprettadopsini Savatenalinton, 2020.