Megacraspedus ischnota is a moth of the Gelechiidae family. It was described by Meyrick in 1904. It is found in Australia, where it has been recorded from Western Australia. The wingspan is 7-9 mm. The forewings are pale ochreous, more or less wholly suffused with fuscous and sprinkled with dark fuscous and with an elongate dark fuscous dot on the fold at one-fourth. The plical and second discal stigmata are dark fuscous. The hindwings are whitish-grey.