Abstract
A new cypridopsine genus, Cyprettadopsis gen. nov., described here, is principally characterized by the reduced caudal ramus, the strongly serrated claw G2 of the antenna (A2), the A2 subquadrate terminal segment, the undivided penultimate segment of the second thoracopod (T2), the morphology of the third thoracopod bearing a distinctly separated terminal segment, the complete septa on the posteroventral margin and the incomplete septa on the anterior margin of both valves. Based on a combination of these characters, a new tribe, Cyprettadopsini trib. nov., is created in the subfamily Cypridopsinae Kaufmann, 1900 to accommodate this new genus, and one new species, Cyprettadopsis sutura gen. et sp. nov., is described as the type species. Apart from the above generic characters, the following features are also typical of the new species: the tiny needlepoint-like pores along the anterior and ventral margins of both valves, the remarkably large β-seta on the mandibular palp and the considerably short d2 seta on the T2. The presence of marginal septa in the new genus is a distinctive character and constitutes the first record of this feature within Cypridopsinae. The taxonomically relevant characters in the new taxon and related taxa are briefly discussed.
Highlights
The primary taxonomic character of the subfamily Cypridopsinae Kaufmann, 1900 is the reduced caudal ramus
Based on the presence of septa, the new genus could be a representative of the Cyprettinae group, which comprises six genera in three subfamilies, namely Batucyprettinae Victor & Fernando, 1981, Bradycypridinae Hartmann & Puri, 1974 and Cyprettinae Hartmann, 1971, according to the classification by Meisch et al (2019)
Three genera (Bradycypris Sars, 1925, Paracypretta Sars, 1924 and Zonocypretta De Deckker, 1981) of the subfamily Bradycypridinae are principally united by the presence of complete marginal septa, which is the co-feature of the two other genera (Cypretta Vávra, 1895 and Pseudocypretta Klie, 1932) in the subfamily Cyprettinae
Summary
The primary taxonomic character of the subfamily Cypridopsinae Kaufmann, 1900 is the reduced caudal ramus. This subfamily is composed of 19 genera and divided into three tribes: Cypridopsini Kaufmann, 1900, Potamocypridini Ghetti & McKenzie, 1981 and Zonocypridini Higuti & Martens, 2012 (Higuti & Martens 2012; Savatenalinton 2018a). While most genera belong to the Cypridopsini, only one genus (Potamocypris Brady, 1870) and three genera (Cabelodopsis Higuti & Martens, 2012, Thaicypridopsis Savatenalinton, 2018 and Zonocypris Müller, 1898) are members of the Potamocypridini and Zonocypridini, respectively. Due to the presence of a reduced caudal ramus (Diaz & Martens 2018; Savatenalinton 2018a) Far, it has been kept in Notodromadidae (see Meisch et al 2019). Zonocypris sp. 1 was subsequently described as a new taxon (Thaicypridopsis longispinosa Savatenalinton, 2018) (Savatenalinton 2018a), while Zonocypris sp. 2. will be described in the present contribution as a new genus and species
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
