FIGURE 4 in A new species of Proceratophrys (Anura: Cycloramphidae) from western Brazil

FIGURE 4. Multivariate variation in morphology within and among Proceratophrys strussmannae sp. nov. and P. concavitympanum along the first two principal component axes. Analyses of morphological data include all the specimens examined and were based on the fifteen variables described in materials and methods section. Prior to analysis, all variables were regressed with SVL, and the residuals of these regressions were used in the principal component analysis. To maximize the samples, males and females were grouped together.