Flower-Visiting Insects
of Black
Bindweed
Fallopia convolvulus (Black Bindweed) introduced
(also referred to as Polygonum convolvulus; wasps and probably other insects suck nectar, although some bees may collect pollen; observations are from Krombein et al. and Wilhelm & Rericha as indicated below)
Bees (short-tongued)
Halictidae (Halictinae): Lasioglossum pectorale (WR); Andrenidae (Andreninae): Andrena persimulata (Kr); Andrenidae (Panurginae): Calliopsis andreniformis (Kr)
Wasps
Vespidae (Eumeninae): Euodynerus foraminatus sn (WR)
Flies
Bombyliidae: Villa lateralis (WR)