About Catocala amatrix Hübner, 1813
Catocala amatrix, commonly called the sweetheart underwing, is a species of moth that belongs to the family Erebidae. It is distributed across North America, ranging from Nova Scotia and Ontario southward through Connecticut to Florida, and westward through Texas and Oklahoma to Arizona, with its northern range extending to Montana and Minnesota. On September 12, 2013, Brittany Durocher, a resident of Flagler Beach, Florida, found an exhibition model of this moth in a local consignment shop. This model was created by the Denton Brothers of Wellesley, Massachusetts, who collected the original specimen in Virginia and described it as the subspecies Catocala amatrix virginurus. The wingspan of Catocala amatrix measures between 75 and 95 mm. Adults are active in flight from August to October, with the flight period varying by location. The larvae of this species feed on the leaves of Populus deltoides, Populus grandidentata, Populus nigra, Populus tremuloides, and Salix nigra.