At first all I saw was some green bumps sticking our of this thistle bloom It took a minute to see what it really was–female Spotted Cucumber Beetles (Diabrotica undecimpunctat) providing nourishment for the eggs in their swollen abdomens. You can also see the skipper butterfly (Polites peckius) carefully inserting it proboscis into the florets to reach nectar.
For Encyclopedia of Life entry for the Spotted Cucumber Beetle: Diabrotica undecimpunctata. For BugGuide.net entry: Diabrotica undecimpunctata.
For Encyclopedia of Life entry for Peck’s Skipper : Polites peckius. For BugGuide.net entry: Polites peckius.