Antaeotricha isoplintha is a moth of the family Depressariidae. It is found in Brazil (Para).[1]
The wingspan is 22–23 mm. The forewings are white, in females tinged ochreous except on the costa. The dorsal half is ochreous-whitish, mainly occupied by three subquadrate dark grey blotches. In females, undefined longitudinal streaks of greyish suffusion are found anteriorly beneath the costa and above the middle. There is a better-marked longitudinal grey streak above the anterior part of the second dorsal blotch, shorter in males. A very oblique dark grey dash is found above the end of the cell, with a slight mark preceding it. There is a nearly straight dark grey line from beneath the costa at three-fifths to the posterior angle of the third dorsal blotch. In males there are three and in females six dark grey pre-marginal dots around the apex and termen, the largest about the apex. The hindwings are light grey.[2]