The Quadrate Dagger Moth (Acronicta quadrata) is a moth of the Noctuidae family. In Canada, it occurs across the wooded area north to the southern edge of the Boreal forest. From western Quebec, west to the Rocky mountains in Alberta and north-western British Columbia. It is widespread in the western parts of the United States The wingspan is 30–40 mm. Adults are on wing from June to July depending on the location.