Catoryctis perichalca is a moth in the Xyloryctidae family. It was described by Lower in 1923. It is found in Australia, where it has been recorded from South Australia. The wingspan is 25-27 mm. The forewings are bright ochreous-fuscous, with silvery-white markings. There is a narrow subcostal streak from near the base to the middle, touching the costa on the anterior end and becoming attenuated posteriorly. Two very fine short streaks, somewhat obscure, are found between the posterior extremity of the subcostal streak and the costa at four-fifths, both touching the costa. There is also a broad, clear, longitudinal streak, from the base to just above the middle of the termen, the posterior half somewhat attenuated. A similar streak is found from the base along the dorsum to one-sixth, the