“…KNIGHT (1967) has reviewed the subject of forest insect evaluations. Sequential sampling systems have been developed for a number of insects: the lodgepole needle miner (STARK, 1952), STEVENS and STARK (1962); the larch sawfly (IVES and PRENTICE, 1958); the red pine sawfly (CONNOLA, WATERS and NASON, 1959); white grubs (IVES and WARREN, 1965); and the winter moth (REEKS, 1956). KULMAN and HODSON (1962) used the terminal cluster of shoots to sample populations of jack pine budworm.…”