Flower-Visiting Insects
of Large-Flowered Penstemon

Penstemon grandiflorus (Large-Flowered Penstemon)
(Long-tongued bees suck nectar or collect pollen; short-tongued bees collect only pollen; flies feed on pollen; the skipper sucks nectar; all observations are from Reed, except those from Clinebell & Bernhardt and Crosswhite & Crosswhite as indicated below)

Bees (long-tongued)
Apidae (Bombini): Bombus affinis sn, Bombus auricomus sn, Bombus fervida sn, Bombus griseocallis sn (CB), Bombus pensylvanica sn (CB); Anthophoridae (Anthophorini): Anthophora terminalis sn; Anthophoridae (Ceratinini): Ceratina sp. cp; Anthophoridae (Eucerini): Synhalonia dubitata sn cp olg, Synhalonia hamata sn; Anthophoridae (Xylocopini): Xylocopa virginica prf sn@prf np (CB); Megachilidae (Megachilini): Megachile brevis sn (CB); Megachilidae (Osmiini): Hoplitis pilosifrons cp (Re, CB), Osmia distincta cp olg (Re, CC), Osmia simillima cp

Bees (short-tongued)
Halictidae (Halictinae): Agapostemon virescens cp, Augochlorella persimilis cp (CB), Augochlorella striata cp fq (Re, CB), Lasioglossum spp. cp fq (CB), Lasioglossum acuminatum cp, Lasioglossum coriaceus cp, Lasioglossum cressonii cp, Lasioglossum nymphaearum cp, Lasioglossum paraforbesii cp, Lasioglossum pictus cp, Lasioglossum pilosus cp, Lasioglossum pruinosus cp, Lasioglossum rohweri cp; Colletidae (Hylaeinae): Hylaeus affinis cp, Hylaeus mesillae cp

Syrphidae: Sphaerophoria sp. fp; Anthomyiidae: Hylemya sp. fp

Hesperiidae: Polites peckius sn