The numbers of Forest Tent Caterpillar, a native insect that feeds on hardwoods, are on the rise. The Department of Forests, Parks and Recreation (VT FPR) monitors Forest Tent Caterpillar. Trap catches this year increased compared to last year in 12 of 13 sites. Populations seem to be growing across the state. The 2016 aerial survey mapped at least 24,500 acres of FTC defoliation. Heaviest defoliation occurred in Essex, Lamoille, Orleans and Caledonia counties.