a member of some genera in the family Cercopidae whose nymphs feed on plants and live in a white frothy mass (spittle) consisting of air bubbles and partially digested sap expelled from the anus —note several species of spittlebugs are serious pests of pines and other conifers, including the Saratoga spittlebug (Aphrophora saratogensis) and the pine spittlebug (A. parallela) This definition last updated 10/07/2008