Flower-Visiting Insects
of Slender Penstemon
(Wisconsin
variety)
Penstemon gracilis wisconsinensis (Slender Penstemon, Wisconsin variety)
(insect activity is largely unspecified; observations are from Crosswhite & Crosswhite; information is restricted to Mason bees)
Bees (long-tongued)
Megachilidae (Osmiini): Osmia albiventris (CC), Osmia atriventris (CC), Osmia distincta cp olg (CC), Osmia illinoensis (CC), Osmia proxima (CC), Osmia pumila (CC), Osmia simillima (CC)