Acyphas semiochrea is a moth of the Lymantriidae family. It is found along most of the coast of Australia, including: New South Wales, Queensland, South Australia, Tasmania, Victoria and Western Australia. The wingspan is about 30 mm. Adult females are white and have an orange tuft on the tail. Males are also white but sometimes have a dark mark at the tornus of each forewing or a broad dark band along the margin of each forewing. The hairs around the thorax are sometimes yellowish. Sometimes the black skin of the thorax and/or abdomen shows through between the white hairs.