Flower-Visiting Insects
of Hill's Thistle
Cirsium hillii (Hill's Thistle)
(Long-tongued bees suck nectar & collect pollen; short-tongued bees collect pollen and they are usually non-pollinating; beetles feed on pollen or gnaw on floral tissue and they are non-pollinating; other insects suck nectar. Observations are from Robertson and Wilhelm & Rericha as indicated below.)
Bees (long-tongued)
Apidae (Apini): Apis mellifera (WR); Apidae (Bombini): Bombus affinis (WR), Bombus auricomus (WR), Bombus bimaculatus (WR), Bombus fervidus (WR), Bombus griseocollis (WR), Bombus impatiens (WR), Bombus pensylvanicus sn (Rb), Psithyrus variabilis sn (Rb); Anthophoridae (Ceratinini): Ceratina calcarata (WR), Ceratina dupla (WR), Ceratina mikmaqi (WR); Anthophoridae (Eucerini): Melissodes bimaculata (WR), Melissodes desponsa cp olg (WR); Anthophoridae (Xylocopini): Xylocopa virginica (WR); Megachilidae (Megachilini): Megachile latimanus (WR), Megachile montivaga sn cp (Rb, WR), Megachile pugnata sn cp (Rb, WR)
Bees (short-tongued)
Halictidae (Halictinae): Halictus ligatus (WR), Lasioglossum pectorale cp np (Rb); Colletidae (Hylaeinae): Hylaeus affinis (WR), Hylaeus illinoisensis (WR), Hylaeus mesillae (WR)
Butterflies
Nymphalidae: Danaus plexippus sn (Rb), Speyeria cybele sn fq (Rb), Speyeria idalia sn (Rb); Papilionidae: Battus philenor sn (Rb), Papilio cresphontes sn (Rb), Papilio troilus sn (Rb); Pieridae: Colias philodice sn (Rb)
Skippers
Hesperiidae: Polites peckius sn (Rb), Thorybes bathyllus sn (Rb)
Beetles
Cerambycidae: Typocerus sinuatus fp np (Rb); Scarabaeidae: Trichiotinus piger fp gnw icp np fq (Rb)