With a little help from our more knowledgeable friends, this insect on an Ox Eye Daisy has been identified as a Virginia Ctenucha (Ctenucha virginica). The friends are Marnie Reed Crowell and Kenneth William Shellenberger. It’s reportedly the largest and most broad-winged wasp moth in North America.
The name for the moth genus Ctenucha (“ten-OOCH-ah”) was derived from the Greek words meaning “having a comb,” an obvious reference to insect antennae. (Brooklin, Maine) Click on image to enlarge it.