Figure S1. Plot of loadings for PC1 and PC2 on lizard coloration. There is one arrow for each measured wavelength. Each arrow represents the loadings for PC1 (x) and PC2 (y) at that wavelength. Arrows are colored from short wavelengths (∼300 nm, white) to long wavelengths (∼700 nm, black).

Table S1. Sample sizes by habitat for each data set.

Table S2. Results of discriminant function analyses of lizards from white sands and dark soil populations. The numbers in the table represent the proportion of individuals correctly classified to their own population.

Table S3. Loadings for PCA analysis on body shape. Variables represent residuals from body size.

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