Dichomeris vetustella is a moth in the Gelechiidae family. It was described by Walker in 1864. It is found in Brazil (Amazonas). Adults are greenish gold-brown, the forewings cinereous towards the tips and with cinereous veins, as well as three yellowish subcostal slightly oblique lines. There is also an irregular red line along the end of the disc. The hindwings are greenish gold-cinereous.