Diaphania costata, commonly known as the white palpita moth, is a moth of the Crambidae family. It is widely disperesed, being found in the Indomalaya ecozone, as well as Europe. It is also found in Mexico and Texas, possibly having been introduced accidentally. It is a small moth (less than 20 mm wingspan) with translucent white wings, and a gold line on the front edge of the forewing.