Table 4. Pearson’s product moment correlation between logarithm of butterfly richness and three measures of host plant diversity using raw data and phylogenetic independent contrasts.

		Phylogenetic contrast
	Normal correlation	Alternative 1	Alternative 2	Traditional
df	38	37	37	37
h	0.782	0.754	0.802	0.800
α	0.695	0.959	0.958	0.920
PD	0.792	0.979	0.979	0.980

df = degrees of freedom for the correlation test. h = simple richness of host plant orders. α = Fishers’s alpha. PD = Faith’s index of Phylogenetic Diversity based on plant phylogeny. All correlations were significant (p<0.05).