Flower-Visiting Insects
of Hill's Thistle

Cirsium hillii (Hill's Thistle)
(Long-tongued bees suck nectar & collect pollen; short-tongued bees collect pollen & are non-pollinating; beetles feed on pollen or knaw on the flowers & are non-pollinating; other insects suck nectar; observations are from Robertson)

Bees (long-tongued)
Apidae (Bombini): Bombus pensylvanica sn, Psithyrus variabilis sn; Megachilidae (Megachilini): Megachile montivaga sn cp, Megachile pugnatus sn cp

Bees (short-tongued)
Halictidae (Halictinae): Lasioglossum pectoralis cp np

Nymphalidae: Danaus plexippus sn, Speyeria cybele sn fq, Speyeria idalia sn; Papilionidae: Battus philenor sn, Papilio cresphontes sn, Papilio troilus sn; Pieridae: Colias philodice sn

Hesperiidae: Polites peckius sn, Thorybes bathyllus sn

Cerambycidae: Typocerus sinuatus fp np; Scarabaeidae (Cetenonniae): Trichiotinus piger fp np gnw icp fq