Flower-Visiting Insects
of Twin-Leaf

Jeffersonia diphylla (Twin-Leaf)
(Only pollen is produced by the flowers of this plant.  Bees usually collect pollen, although cuckoo bees explore the flowers in vain for nectar; flies feed on pollen or they explore the flowers in vain for nectar; beetles feed on pollen, gnaw on floral tissue, or explore the flowers in vain for nectar; observations are from Graenicher and Wilhelm & Rericha as indicated below.)

Bees (long-tongued)
Apidae (Apini): Apis mellifera cp (WR); Anthophoridae (Ceratinini): Ceratina dupla dupla cp (Gr, WR); Anthophoridae (Nomadini): Nomada cressonii exp (WR); Megachilidae (Osmiini): Osmia cornifrons cp (WR)

Bees (short-tongued)
Halictidae (Halictinae): Augochlora pura pura cp (WR), Augochlorella striata cp (Gr), Halictus confusus cp (Gr, WR), Halictus rubicundus cp (WR), Lasioglossum anomalum cp (Gr), Lasioglossum birkmanni cp (WR), Lasioglossum cattellae cp (WR), Lasioglossum coeruleum cp (WR), Lasioglossum coriaceum cp (Gr, WR), Lasioglossum cressonii cp (WR), Lasioglossum ephialtum cp (WR), Lasioglossum foxii cp (Gr, WR), Lasioglossum laevissimum cp (WR), Lasioglossum nigroviride cp (WR), Lasioglossum smilacinae cp (WR), Lasioglossum subviridatum cp (WR), Lasioglossum tegulare cp (Gr), Lasioglossum versans cp (WR), Lasioglossum versatum cp (WR), Lasioglossum zephyrum cp (Gr, WR); Andrenidae (Andreninae): Andrena cressonii cp (WR), Andrena dunningi cp (WR), Andrena forbesii cp (WR), Andrena imitatrix cp (WR), Andrena nasonii cp (WR)

Syrphidae: Brachypalpus oarus fp (WR), Pipiza femoralis fp (WR), Syrphus ribesii exp (Gr); Bombyliidae: Bombylius major exp (WR)

Curculionidae: Idiosethus tubulatus gnw icp np (WR); Nitidulidae: Carpophilus brachypterus (WR); Oedemeridae: Asclera ruficollis fp (WR); Pyrochroidae: Pedilus lugubris (WR)