Epiphthora isonira is a moth of the family Gelechiidae. It was described by Edward Meyrick in 1904. It is found in Australia, where it has been recorded from New South Wales.[1]
The wingspan is . The forewings are white, more or less thinly irrorated (sprinkled) with dark fuscous and with small dark fuscous spots beneath the costa at one-sixth and one-third, and in the disc at one-sixth. There is a curved oblique dark fuscous bar from the middle of the dorsum, reaching halfway across the wing, sometimes interrupted. A dark fuscous spot is found on the tornus. All these markings vary in distinctness. The hindwings are pale grey.[2]