About Eupithecia unicolor (Hulst, 1896)
Eupithecia unicolor is a species of moth that belongs to the Geometridae family. It is distributed from British Columbia southward to California. This moth has a wingspan of approximately 21 millimeters. Adult Eupithecia unicolor have been recorded in flight from May through November. The larvae of this species feed on the plants Juniperus scopulorum, Thuja plicata, and Chamaecyparis nootkatensis. When larvae are fully grown, they reach a length of about 20 millimeters. Larvae can be found from April to May, and pupation takes place in June. This species overwinters as a mid-instar larva.