Lethata satyropa is a moth of the Depressariidae family. It is found in French Guiana. The wingspan is about 25 mm. The forewings are deep ochreous, with scattered black scales and with the costal edge dull crimson from the base to two-thirds, suffused beneath with purple and with a slender brown-red streak along the dorsum nearly throughout. There is a cloudy purplish line at two-fifths from the disc to the dorsum and a rather large round dark fuscous spot in the disc beyond the middle, containing a transverse purplish spot. A faint fine curved fuscous subterminal line is found from the disc to the dorsum and the apical and terminal margin are deep yellow-ochreous. The hindwings are whitish-ochreous, the dorsal third suffused with pale greyish, the apical and terminal edge yellow.