Yellow to gray-brown are common colors among the more than 2,000 spittlebug species worldwide. Froghopper is a nickname for the spittlebug, inspired by the adult's froglike hop, long legs and big eyes. Plant and grass sap sucked from stems and leaves is more to its liking. Among grasses, damage is manifested as dried-out leaves. Favored plants include strawberry and chrysanthemum.
Pine trees are also on the list.
Except in severe infestations, damage isn't major. The spittlebug makes the worst nuisance of itself during its immature nymph stage. If there are a few clumps of frothy masses on plants, spray them with a garden hose. The nymphs may rebuild elsewhere, but repeated sprayings should hound them out of the yard. For severe infestations, spray off spittle masses, then apply malathion or diazinon.