The Praeclara Underwing (Catocala praeclara) is a moth of the Erebidae family. It is found from Nova Scotia west to south-eastern Alberta, south to Florida and Kansas. The wingspan is 38–50 mm. Adults are on wing from August to September in one generation depending on the location. The larvae feed on Amelanchier, Crataegus species (including Crataegus calpodendron), Photinia species (including Photinia x prunifolia, and Photinia melanocarpa).