Insects Feeding
on these Plants:
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Sagittaria filiformis (Threadleaf Arrowhead) [Alismataceae]
(observations are from O'Brien, Harms & Grodowitz)
Coleoptera (Beetles)
Curculionidae: Listronotus sordidus Obr1997
Lepidoptera (Butterflies, Skippers, & Moths)
Crambidae: Parapoynx obscuralis (Obscure Pondweed Moth) [larvae feed on floating leaves, found in E. USA & SE Canada] HG2009