The chestnut casebearer moth (Coleophora leucochrysella) was a species of moth in the family Coleophoridae. It was endemic to the United States, where it was found in Indiana, Pennsylvania and Virginia. It is thought the species became extinct when many host trees died due to an infection of the fungus Cryphonectria parasitica, which was accidentally introduced from Asia around 1900. The wingspan was 14–15 mm. The larvae fed on Castanea dentata. They created a case consisting of silk and leaf fragments. It had a length of about 10 mm.