Flower-Visiting Insects
of Plains Yellow Primrose
Calylophus serrulatus (Plains Yellow Primrose)
(the bee sucks nectar and/or collects pollen, the butterfly sucks nectar; information is limited; observations are from Kopper et al. and Stevens as indicated below)
Bees (long-tongued)
Megachilidae (Megachilini): Megachile brevis (Stv)
Butterflies
Nymphalidae: Speyeria idalia sn (KMC)