Acryptolechia malacobyrsa is a moth in the family Depressariidae. It was described by Edward Meyrick in 1921. It is found in Japan, Korea, China (Fujian, Henan, Jiangxi, Shaanxi, Sichuan) and Taiwan.[1]
The wingspan is about 19 mm. The forewings are deep yellow-ochreous, sprinkled rather dark purplish-fuscous and with some purplish-fuscous suffusion towards the dorsum anteriorly. There is an oblique oval purplish-fuscous spot representing the first discal stigma and a somewhat oblique slender purplish-fuscous fascia from beyond the middle of the costa to the dorsum before the tornus. There is a marginal series of small purplish-fuscous spots around the posterior part of the costa and termen. The hindwings are grey, paler towards the base.[2]