Caryocolum tricolorella is a moth of the family Gelechiidae. It is found from Fennoscandia to the Pyrenees, Alps and Romania and from Ireland to Russia and Ukraine.
The wingspan is about 12 mm. The head is dark fuscous, face whitish-suffused. Terminal joint of palpi almost as long as second. Forewings are ferruginous-brown, costa and termen suffused with blackish; a white rather oblique fascia at 1/4, followed by a triangular black costal blotch; a white irroration in middle of disc; second discal stigma black; an angulatedwhite fascia at 3/4 sometimes interrupted to form two spots, costal larger and rather posterior. Hindwings 1, light grey.[1]
Adults are on wing from June to August.[2]