Eurysacca melanocampta is a moth in the Gelechiidae family. It was described by Meyrick in 1917. It is found in Peru. The wingspan is about 16 mm. The forewings are light greyish-ochreous, irregularly sprinkled with blackish-grey, the costa narrowly suffused with dark grey irroration and with several cloudy black dots on the basal area. There is a thick black suffused streak from the costa at one-fourth, rather obliquely half across the wing, then abruptly bent and continued through the middle of the disc to the apex, attenuated posteriorly, nearly interrupted by small pale spots representing the discal stigmata, and irregularly interrupted near the apex. The hindwings are pale slaty-grey.