Flower-Visiting Insects
of Showy Penstemon
(typical
variety)
Penstemon cobaea cobaea (Showy Penstemon, typical variety) introduced
(this plant is adventive from a region west of Illinois; some long-tongued bees suck nectar, while others collect pollen; short-tongued bees collect pollen only; the bee-fly sucks nectar only; the beetle sucks nectar, gnaws on the flowers, and is probably non-pollinating; observations are from Clinebell & Bernhardt)
Bees (long-tongued)
Apidae (Bombini): Bombus auricomus sn, Bombus pensylvanica sn fq; Anthophoridae (Ceratinini): Ceratina strenua cp; Anthophoridae (Eucerini): Synhalonia hamata sn; Megachilidae (Osmiini): Hoplitis pilosifrons cp fq
Bees (short-tongued)
Halictidae (Halictinae): Augochlorella striata cp, Halictus ligatus cp, Lasioglossum spp. cp fq
Flies
Bombyliidae: Bombylius sp. sn
Beetles
Scarabaeidae: Euphoria sepulcralis sn gnw np