Cnaphalocrocis loxodesma is a moth in the Crambidae family. It was described by Turner in 1915. It is found in Australia, where it has been recorded from the Northern Territory. The wingspan is about 14 mm. The forewings are whitish with some fuscous suffusion at the base and on the costal part of the disc. The lines are fuscous. The hindwings are as the forewings.