Acanthopteroctetes tripunctata is a moth of the Acanthopteroctetidae family. It was described by Braun in 1921. It is found in Montana. The wingspan is about 11 mm for males. The forewings are fuscous with a slight coppery luster and with three large, pale yellowish spots. The hindwings are slightly paler and the scales are narrower than those on the forewings. Adults are on wing in July, probably in one generation per year.