Figure 8 in Songs, genetics, and morphology: revealing the taxonomic units in the European Cicadetta cerdaniensis cicada group, with a description of new taxa (Hemiptera: Cicadidae)

Figure 8. Echemes of phrase 3 in Cicadetta cerdaniensis s.str. (△) and Cicadetta sibillae sp. nov. (◆). A, duration of echemes as a function of perch temperature, with linear regression trend lines and standard errors (grey areas). B, box plot of the number of syllables per echeme given as mean values of 20 echemes for each individual. C–F, oscillograms (time versus amplitude) close to the linear regression trend lines of (A): C, C. sibillae sp. nov. at 23 °C perch temperature (with measured duration terms, Northern Apenninian metapopulation); D, C. sibillae sp. nov. at 28 °C (Western Alpine metapopulation); E, C. cerdaniensis s.str. at 23 °C (Eastern Pyrenees); F, C. cerdaniensis s.str. at 28 °C (Eastern Pyrenees).