Tetracis cervinaria
Tetracis cervinaria is a moth of the family Geometridae first described by Alpheus Spring Packard in 1871. It is found in North America from British Columbia south to Kern County, California and eastward to western Montana, south-eastern Idaho, Carbon County, Wyoming and Larimer County, Colorado. It is found at elevations of 790 to 2,375 meters. The length of the forewings 19–23 mm. Adults are on wing from February to June. The larvae feed on "Prunus emarginata" and "Prunus virginiana".