Hemiarcha caliginosa is a moth in the Gelechiidae family. It was described by Turner in 1919. It is found in Australia, where it has been recorded from Queensland. The wingspan is about 11 mm. The forewings are ochreous-whitish with general but somewhat patchy fuscous suffusion. The discal dots are indistinct, the first before the middle, the plical shortly before the first discal and the second discal at two-thirds. The hindwings are pale-grey.