Antaeotricha trisecta is a moth in the family Depressariidae. It was described by Lord Walsingham in 1912. It is found in Mexico (Tabasco) and Guatemala.[1]
The wingspan is about 18 mm. The forewings are shining, silvery white, with a broad dark mouse-grey patch along the dorsum, somewhat dilated from the base below the fold, crossing the middle of the fold and abruptly ending with a convex margin two-thirds of the distance between the cell and the termen, where it extends fully as high as the upper edge of the cell. A slender line continues the curve of its outer margin to the costa. This patch is twice interrupted by the white ground colour, first at about one-third, secondly beyond the middle, after each interruption a curved line of the dark mouse-grey scales is produced backward from the inner edge of the patch beyond, the first of these lines sometimes forming a semi-detached streak, nearly reaching to the base of the wing. Around the termen and apex is a slight clouding of dark mouse-grey scales forming a series of connected spots between the veins. The hindwings are pale brownish grey.[2]