Flowering Plants Visited
by Colletes
robertsonii
Colletes robertsonii Dalla Torre: Colletidae (Colletinae), Hymenoptera
(observations are from Robertson, Reed, LaBerge, Krombein et al., and Smith et al.; this bee is an oligolege of Dalea spp.)
Asteraceae: Rudbeckia hirta (Smh); Fabaceae: Amorpha canescens (LB), Dalea candida cp olg fq (LB, Kr, Smh), Dalea purpurea sn cp olg fq (Rb, Smh), Trifolium sp. (Smh); Lamiaceae: Monarda punctata (LB, Kr); Liliaceae: Allium canadense (Re)