Maple Spanworm (Ennomos magnaria)
Also known as the notched wing moth, the maple spanworm is a species of geometer moth that occurs throughout North America. Maple spanworms typically inhabit mixed and deciduous forests and adults are active at night. Adults will fly from July to October and larvae are active from May to August. Larvae art typically found on the leaves of alder, ash, birch, elm, maple, oak and several other trees.
Both the adults and larvae of E. magnaria are incredible mimics with adults mimicking dead leaves, by holding their wings at an angle giving the impression of a curled leaf, and larvae mimicking twigs.