Antepione thisoaria, the variable antepione, is a moth of the family Geometridae. In Canada it is found from Nova Scotia to Manitoba, south into the United States south and west to the Gulf states (including Alabama, Arkansas, Connecticut, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Nebraska, New Jersey, New Hampshire, New York, North Carolina, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Carolina, Tennessee, Virginia, West Virginia), as well as Michoacan in Mexico and further south to Costa Rica and Guatemala.