Antaeotricha sardania is a moth in the Depressariidae family. It was described by Edward Meyrick in 1925. It is found in Brazil (Para) and Peru.
The wingspan is 14-15 mm. The forewings have an irregular grey longitudinal suffusion extending from the base through the disc and gradually expanding to three-fourths, sometimes extending nearly to the costa, with variable transverse bars, spots, or clouds of dark fuscous suffusion, beyond the middle connected with the dorsum by a more or less developed patch of similar mottling, and with an oblique streak from near the posterior extremity to the costa beyond the middle. There is a dark ferruginous fascia narrowed downwards around the apex and upper two-thirds of the termen, edged anteriorly by a sinuate white line and then by a streak of grey suffusion. The hindwings are grey with the costa rather dilated on the anterior two-thirds, with a fringe of white projecting scales and a stronger white median tuft, as well as an ochreous-whitish expansible hairpencil lying in a yellowish subcostal groove from the base to two-thirds.