Dichomeris caustonota is a moth in the family Gelechiidae. It was described by Edward Meyrick in 1914. It is found in Guyana.[1]
The wingspan is about . The forewings are yellow ochreous with the costal edge blackish towards the base and a moderate dark fuscous streak along the dorsum from the base to the tornus, somewhat dilated before the middle. There is a triangular dark fuscous patch extending on the costa from two-fifths to four-fifths, and reaching halfway across the wing, edged with silvery whitish. There is a roundish blotch of dark fuscous suffusion before the termen beneath the apex and there are some black terminal dots. The hindwings are dark fuscous.[2]