Crocanthes rhodantha is a moth in the Lecithoceridae family. It was described by Meyrick in 1918. It is found in New Guinea. The wingspan is about 16 mm. The forewings are light rosy-crimson with an irregular transverse light yellow blotch in the disc before the middle, connected with the costa before the middle by some yellowish suffusion. There is a series of indistinct yellow marks along the apical part of the costa and termen. The hindwings are pale greyish, the apex slightly rosy-tinged.