Rectiostoma flinti is a moth in the Depressariidae family. It was described by Duckworth in 1971. It is found in Mexico. The wingspan is 13–16 mm. The forewings are yellow basally, concolorous and continuous with the thorax and tegulae except for a small patch of gray brown at the extreme base of the dorsum. The distal margin of the yellow area is bordered by a dark brown line immediately paralleled by a broad transverse band of iridescent blue. The apical half of the forewing is dark brown with alternating irregular transverse patterns of red brown, black, iridescent gray, iridescent blue violet, red brown, black, iridescent blue violet in sequence from midpoint toapex. The hindwings are dark brown with a white patch on the anterior margin.