Zale lunata is a moth (Order Lepidoptera) that belongs to the Family Noctuidae, and Subfamily Catocalinae. The Noctuidae are a large family with more than 2,900 species in North America. Species of this family are mostly nocturnal, and are commonly attracted to lights at night. Z. lunata/ is the largest and most common of the 20 species in the genus Zale that occur in eastern North America. It has a flight season from March to November. The caterpillars of Z. lunata feed on many trees and shrubs such as maples, plums, and willows. Species of this Family have a pair of tympanal auditory organs located at the base of their metathorax that can detect frequencies of 3 to 100 kHz. These organs function to detect predatory bats. This specimen was collected in the stairwell of a dorm on the Duke University campus. It is classified as the form “edusa” because of its whitish to greenish-white terminal patches. This form generally has a wingspan of 4-5.5 cm.