Flowering Plants Visited
by Brachyopa
vacua
Brachyopa vacua Osten Sacken: Syrphidae, Diptera
(observations are from Robertson)
Caprifoliaceae: Viburnum prunifolium sn (Rb); Rosaceae: Prunus serotina [flwr sn] (Rb); Salicaceae: Salix rigida [stam sn] (Rb)