Nearly 50 species have been collected at Cedar Creek, some undetermined material remains in the collection, and many species remain to be discovered.
Most Geometrids feed on the foliage of trees and shrubs in woodland.
Larvae can generally be recognized by their 2-3 pair of prolegs and 'inchworm' movements. Do not confuse with Noctuid loopers. It is a small red and brown day-flier frequently seen in early spring. The Fall Cankerworm, Alsophila pometaria , belongs to this subfamily. Larvae feed on many trees.