what do spit bugs eat
I am an arborist. Graduate study, travel, work make me an expert in benthics, European languages, wildlife mapping, world fauna and flora. Plant sap is what spit bugs eat. Specifically, the insects in question belong to the superfamily Cercopoidea. They have piercing-sucking mouthparts which allow them to access a plant's internal fluids.
Diet & Damage. When they are adults June Bugs do little damage, however get rid of them since after they lay their eggs in the soil and your lawn the grubs do a lot of damage! Adult june bugs eat leaves of walnut, oak, and foilage from many plants. The grubs feed on organic matter in the soil and damage grass in your lawn as they eat the roots. They will eat roots of your ornamentals, weed roots and other seedling roots, corn, roses and potatoes.