Cypris, O. F. Muller, 1776

Mesquita-Joanes, Francesc, Aguilar-Alberola, Josep A., Palero, Ferran & Rueda, Juan, 2020, A new species of Cypris (Crustacea: Ostracoda) from the Iberian Peninsula and the Balearic Islands, with comments on the first ostracod named using the Linnean system, Zootaxa 4759 (1), pp. 113-131 : 123

Key to species of the genus Cypris found in Europe (modified after Martens 1990; Meisch 2000; Fuhrmann 2012)

1a Valves in dorsal view each with a large, lateral spine................................................ C. bispinosa

1b No large lateral spines..................................................................................2

2a Surface of valves densely covered with longitudinal lists................................................ C. striata

2b No longitudinal lists................................................................................... 3

3a Valve surface conspicuously sculptured and pitted.................................................. C. granulata

3b Valve surface smooth or with smaller and shallower pits.......................................................4

4a Frontal edge of valves with a row of spines. Right valve margin caudally with 3-5 spines, one of them conspicuously larger than the others............................................................................................5

4b No conspicuous spines posteriorly nor anteriorly. Valve frontal edges asymmetrical; right valve clearly lip-like, showing a beak-like frontal part in dorsal view........................................................................6

5a Largest posterior spine on the right valve located near the ventral edge.................................. .. C. pubera

5b Largest posterior spine on the right valve located near the point at maximum carapace length on the posterior edge................................................................................................. C. triaculeata

6a Carapace slightly elongated in dorsal view, and dorsally weakly arched in lateral view. Postero-ventral fused zone wide. Posterior edge of valves faintly serrated, i.e. with a row of subequal denticles ( Fig. 5k ).................... C. pretusi sp. nov.

6b Carapace globose in dorsal view and dorsally strongly arched in lateral view. Postero-ventral fused zone narrow. Posterior edge of valves smooth.............................................................................. C. decaryi

Figures

FIGURE 5. Scanning electron micrographs (A-K) and drawings (L–N) of shells and valves of Cypris pretusi sp. nov. A–B: dorsal (A) and ventral (B) view of whole specimens from R. Palància (A: MUVHNZY0000, B: MUVHNZY0001). C: dorsal view of a specimen from Minorca (MUVHNZY0002). D–E: Inner view of left (D) and right (E) valves of specimen MUVHNZY0005 from R. Palància. F–G: Inner views of left (F) and right (G) valves of a specimen MUVHNZY0003 from Minorca. H–I: Outer views of right (H) and left (I) valves of a specimen MUVHNZY0004 from Minorca. J: detail of anteroventral part of a female (MUVHNZY0001). K: detail of postero-ventral part of a female (MUVHNZY0001) showing the apparent denticles, larger and less numerous in the right valve. L–N: drawings of left (L) and right (M) valve, and detail of the posterior edge of right valve (N) of a specimen (MUVHNZY0008) from Minorca. Small scale below M=500 µm for A–I, L and M, larger scale=500 µm for N. Scale for J–K indicated as=100 µm.