Stenoma ptychocentra is a moth of the Depressariidae family. It is found in French Guiana. The wingspan is about 13 mm. The forewings are light glossy grey with the costal edge ochreous-whitish and with a black basal dot in the middle. The plical stigma is conspicuous and black and there is a rather thick blackish line from three-fifths of the costa to the dorsum near the tornus, hardly curved in the middle. The area beyond this is somewhat darker grey and there is a marginal row of indistinct blackish dots around the apex and termen. The hindwings are dark grey.