Prionapteryx albicostalis is a moth in the family Crambidae. It was described by George Hampson in 1919. It is found in what was Madras State in India.[1]
The wingspan is . The forewings are white, suffused with rufous and irrorated (sprinkled) with black in the interspaces. The costal area is pure white, with a slight rufous tinge towards the base. The hindwings are white, faintly tinged with red brown.[2]