Cypretta Vavra 1895

Genus Cypretta Vávra, 1895

Type species: Cypretta tenuicauda (Vávra, 1895) G.W. Müller 1898

Other species: see Meisch et al. (2019) and Savatenalinton (2018).

Diagnosis (based on the type species). CpLl triangular, with rounded dorsal margin in lateral view, Cp wide in dorsal and ventral views, RV anteriorly, ventrally and posteriorly overlapping the LV, most pronounced at the anterior side; both valves with a large outer list. RV with large il, creating a Strandesia- like groove along anterior, ventral and posterior margins. This il crenulated in postero-ventral corner. LV with a weak anterior il and a strongly inwardly displaced sl along the entire posterior margin. Both valves with strong anterior marginal septa; posterior septa and lunules possible. Calcified inner lamella in both valves wide anteriorly and narrow posteriorly. Cms consisting of five small, semi-circular scars, two anteriorly, three posteriorly and two anteroventral mandibular scars.

A1 with five distal-most segments relatively short. A2 with large and narrow claws and natatory setae long, reaching tips of end claws. MdCox relatively slender, MdPalp with α seta of medium length and narrow, β seta of medium length, stout, and hirsute, γ seta short and slender, also hirsute. Mx1 with second palp segment ca. twice as long as basal width; third endite with two Zahnborsten distally set with few spines; two side-ways directed bristles of medium length and hirsute. T1 with two short a setae and one short d seta. T2 with setae d 1 and d 2 short; f seta long. T3 a cleaning leg with pincer-shaped distal part; seta d p longer than d 1 and d 2, setae e, f and h 1-3 short. CR with slender and short ramus, claws G a (longest) and G p seta-like. CR attachment a single rod.

Remarks. Several species presently allocated to the genus Cypretta do not fully fit this diagnosis.Some characters will be discussed below, but a fuller appraisal of the taxonomy of the genus will be presented elsewhere.