Chionodes tessa is a moth in the Gelechiidae family. It is found in North America, where it has been recorded from Washington to Idaho, Oregon, California and Arizona. The wingspan is 12–18 mm. The forewings are white, more or less overlaid and marked with blackish fuscous to black. There is an outwardly oblique white fascia from the costa at the basal fourth, extending to the dorsum, continued along the dorsum to join an irregular white area. An irregular white fascia is found at the apical third, extending to the tornus and there are two or three white spots from the apex along the termen. The hindwings are greyish fuscous.