Flowering Plants Visited
by Parasyrphus
relictus
Parasyrphus relictus Zetterstedt: Syrphidae, Diptera
(observations are from Barrett & Helenurm)
Cornaceae: Cornus canadensis fq (BH); Liliaceae: Clintonia borealis (BH), Maianthemum canadense fp/exp fq (BH)