On a New Species of Pseudocypretta Klie, 1932 (Crustacea, Ostracoda) from the Neotropical Region, with a Discussion on the Position of the Genus

Vitor Góis Ferreira ； Nadiny Martins Almeida ； Janet Higuti ； Koen Martens

《Zoological Studies》 61卷 (2022/12) Pp. 1-23

https://doi.org/10.6620/ZS.2022.61-77

摘要

Pseudocypretta amor sp. nov. (named after the carapace spots resembling the word "Love") is here described from all-female populations from the four major floodplains in Brazil. The new species is compared to the other two known species in the genus, P. maculata Klie (1932), the type species, and P. lineata Ma and Yu (2020). As the latter two species are thus far found exclusively in South East Asia and China, respectively, the present extension of the area of the genus to South America is considerable. Several morphological characters in this genus and species are discussed, especially the presence of marginal septa in the valves, the candonid type T3 with 3^(rd) and 4^(th) segment separated (candonid type) and the caudal ramus which is reduced to a flagellum (cypridopsine type) or is fully absent. Based on the combination of these and other characters, the genus Pseudocypretta is here transferred from the Cyprettinae to the tribe Cyprettadopsini in the Cypridopsinae, as it is closely related to the genus Cyprettadopsis Savatenalinton, 2020. The presence of the candonid type T3 in Cyprididae and Notodromadidae, where the T3 generally has a pincer-shaped tip by the fusion of the 3^(rd) and the 4^(th) segment, is further discussed.

關鍵字

Areal extension ； Neotropics ； Comparative morphology ； Taxonomy ； Circumtropical