Modified method-of-moments self-pollination rate ( S
± 1 SE) in Apis mellifera , Bombus spp., and lepidopterans. All maternal genotypes (i.e., inflorescences with the same genotype) visited by a taxon were used to estimate its influence on S
. Apis mellifera visited 13 maternal genotypes, Bombus spp. visited 16, and lepidopterans visited four. The asterisk indicates P < 0.05 for comparisons between visitor taxa in insertions or removals per visit. We calculated the Ps from pairwise comparisons of the bootstrap estimates for each taxon. We considered the S
for two visitor taxa to be significantly different if > 975, or < 25, of the differences between randomly selected bootstrap estimates from the two visitor taxa were greater than zero.