Flower-Visiting Insects
of
Gumweed
Grindelia squarrosa (Gumweed) introduced
(Bees flies suck nectar, otherwise insect activity is unspecified; observations are from Reed, Graenicher, and Krombein et al. as indicated below; Gumweed is adventive from the western plains)
Bees (long-tongued)
Anthophoridae (Ceratinini): Ceratina sp. (Re); Megachilidae (Megachilini): Megachile latimanus (Re)
Bees (short-tongued)
Halictidae (Halictinae): Lasioglossum lineatulus (Re), Lasioglossum pilosus (Re); Halictidae (Nomiinae): Nomia nortoni nortoni (Kr), Nomia triangulifera (Kr); Andrenidae (Andreninae): Andrena accepta (Kr); Andrenidae (Panurginae): Calliopsis coloradensis (Kr)
Flies
Bombyliidae: Sparnopolius confusus (Gr), Systoechus sp. (Re); Syrphidae: Eristalis stipator (Re)