Figure 3.

Mimetic and non-mimetic trait diversity (H) vary non-randomly across space (a,b) and are positively correlated overall (c). Using all individuals in the dataset, spatial concordance of similar diversity indices (high–high, low–low) occurs everywhere except the Edwards Plateau region of central Texas and northward into southern Oklahoma. After removing all banded and mimetic individuals from analysis (d–f), we continue to show a positive correlation and non-random association across space with the same general area of mismatch, suggesting that the patterns observed in (a–c) are not driven by a shared melanin mechanism uniting crossbands and non-mimetic traits. To enhance visualization of correlations across maps, populations with higher H values (or relative frequencies) are represented by darker points and lower values by lighter points. Between populations, higher interpolated values are shown in orange and lower values in blue. Note that in (d–f), the Otero County, Colorado population was removed because all sampled individuals possessed crossbands.