highly significantP < 0.001
A two-way MANOVA on log 10 -transformed R, G and B luminances of the 6 colour characters indicated that habitat, locality and habitat-locality interaction were all highly significant (habitat, Pillai’s Trace = 0.450, F 6,201 = 27.44, P < 0.001; locality, Pillai’s trace = 0.479, F 18,609 = 6.43, P < 0.001; interaction, Pillai’s trace =0.285, F 18,609 = 3.55, P < 0.001).