Summary of sexual differences in eight homologous morphological measurements in wild-caught G. pennsylvanicus.

?All differences (except for mandible length asymmetry and mean femur length) were tested using Student's t-tests for unequal variances after Levene's tests for equality of variances detected significant heteroscedasticity.?Loadings give the correlations between each measurement and the discriminant function separating males and females.*p***p