Superfamily Fulgoroidea - Planthoppers
Cicadellidae of Goodwell and Texhoma
Texas County, OK

Family Flatidae - Flatid Planthoppers
Metcalfa pruinosa

The above image was ID as Metcalfa pruinosa
by Dr. Andy Hamilton in BugGuide.net

Nymphs   July  ca. 4 mm

Metcalfa pruinosa
8 mm
July