Flower-Visiting Insects
of Common St. John's Wort

Hypericum perforatum (Common St. John's Wort) introduced
(Observations are from MacRae, Swengel & Swengel, Grundel et al., Williams, and Wilhelm & Rericha as indicated below. Bees collect pollen, beetles and flies feed on pollen, while the butterfly explores the flowers in vain for nectar. Only pollen is available as a reward for flower visitors.)

Bees (long-tongued)
Apidae (Apini): Apis mellifera cp (WR); Apidae (Bombini): Bombus bimaculatus cp (WR), Bombus griseocollis cp (WR), Bombus impatiens cp (WR); Anthophoridae (Ceratinini): Ceratina dupla cp (WR); Megachilidae (Megachilini): Megachile latimanus cp (WR)

Bees (short-tongued)
Halictidae (Halictinae): Agapostemon splendens cp (Gnd), Augochloropsis metallica metallica cp (WR), Lasioglossum imitatum cp (WR), Lasioglossum leucocomum cp (Gnd, WR), Lasioglossum pictum cp (Gnd), Lasioglossum pilosum cp (Gnd), Lasioglossum vierecki cp (Gnd); Andrenidae (Panurginae): Perdita halictoides cp (Gnd)

Syrphidae: Toxomerus marginatus fp fq (WR)

Lycaenidae: Lycaeides melissa samuelis exp (Sw)

Buprestidae: Acmaeodera texana fp (McR), Acmaeodera tubulus fp (McR); Cantharidae: 
Chauliognathus pennsylvanicus fp (Wms); Curculionidae: Odontocorynus scutellum-album (WR)