Flower-Visiting Insects
of Bird's Foot Trefoil

Lotus corniculatus (Bird's Foot Trefoil) introduced
(bees suck nectar and/or collect pollen, while butterflies suck nectar and they are probably non-pollinating; observations are from Lewis, Swengel & Swengel, and Wilhelm & Rericha as indicated below)

Bees (long-tongued)
Apidae (Apinae): Apis mellifera (WR); Apidae (Bombini): Bombus impatiens (WR); Megachilidae (Anthidiini): Anthidium oblongatum (WR); Megachilidae (Megachilini): Megachile relativa (WR), Megachile rotundata (WR)

Bees (short-tongued)
Andrenidae (Andreninae): Andrena wilkella (WR)

Lycaenidae: Lycaeides melissa samuelis sn np (Sw); Pieridae: Pieris rapae sn np (Lw)