Flowering Plants Visited
by Toxomerus
politus
Toxomerus politus Say: Syrphidae, Diptera
(observations are from Robertson, Graenicher, and Wilhelm & Rericha; an alternative spelling of the scientific name for this fly is Toxomerus polita)
Apiaceae: Cicuta maculata sn (Rb), Eryngium yuccifolium sn (Rb), Oxypolis rigidior sn (Rb), Sium suave sn (Rb, Gr); Asclepiadaceae: Asclepias verticillata [plab sn] (Rb); Asteraceae: Aster cordifolius (Gr), Aster lanceolatus sn/fp (Gr), Aster lateriflorus sn/fp (Gr), Aster oolentangiensis (WR), Bidens aristosa fp np (Rb), Boltonia asterioides fp np (Rb), Cirsium discolor (WR), Coreopsis tripteris fp (WR), Eupatorium perfoliatum sn (Rb), Euthamia graminifolia sn/fp (Gr), Helianthus occidentalis fp (WR), Rudbeckia subtomentosa sn (Rb), Solidago canadensis sn fq (Rb); Caesalpiniaceae: Chamaecrista fasciculata [exfl sn] (Rb); Cucurbitaceae: Sicyos angulatus sn (Rb); Euphorbiaceae: Euphorbia corollata sn (Rb); Onagraceae: Ludwigia polycarpa sn (Rb); Parnassiaceae: Parnassia glauca sn/fp (Gr); Polygonaceae: Persicaria pennsylvanica sn (Rb, WR); Scrophulariaceae: Scrophularia marilandica fp np (Rb)