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Insects Feeding
on these Plants:

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Ranunculus spp.
(Buttercup, Crowfoot) [Ranunculaceae]
(Observations are from Hottes & Frison, Clark et al., Cranshaw, Smith, Blackman & Eastop, Wheeler et al., Pepper, Robinson & Bradley, Spencer & Steyskal)

Coleoptera (Beetles)
Chrysomelidae: Prasocuris ovalis Clk2004, Prasocuris vittata Clk2004

Diptera (Flies)
Agromyzidae: Napomyza marginalis [larvae feed on stems; found in Pennsylvania, New York, & Canada] SS1986

Heteroptera (True Bugs)
Miridae: Mecomma gilvipes WHM1983

Homoptera (Sucking Insects)

Aphididae: Abstrusomyzus phloxae [polyphagous] BE2013, Colopha ulmicola (Elm Cockscomb Aphid) [possible misidentification of aphid] Pp1965, Macrosiphum pseudorosae [syn. Macrosiphum pallidum] RB1965, Rhopalosiphum nymphaeae (Waterlily Aphid) [buttercups are summer hosts] Crw2004, Thecabius affinis (Poplar-Buttercup Gall Aphid) [galls are formed by folding poplar leaves, migrating during the summer to the roots of buttercups; this aphid is found in NE USA, upper north-central USA, & Canada; syn. Thecabius populiconduplifolius] Crw2004 BE2013 Pp1965, Thecabius gravicornis (Folded-Leaf Balsam Aphid) [forms galls by folding Balsam Poplar leaves, migrating during the summer to the roots of buttercups; found in Quebec, Ontario, Manitoba, & Tennessee] HF1931 BE2013

Hymenoptera (Bees, Wasps, & Sawflies)
Tenthredinidae: Monophadnus aequalis [larvae feed on foliage, probable host plants] Sm2006, Monophadnus pallescens [larvae feed on foliage] Sm2006, Stethomostus fuliginosus [larvae feed on foliage, introduced into North America from abroad] Sm2006

Lepidoptera (Butterflies, Skippers, & Moths)
Tortricidae: Sparganothis sulfureana (Sparganothis Leafroller) Crw2004
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