Cophomantella artonoma is a moth in the family Lecithoceridae. It was described by Edward Meyrick in 1936. It is known from the Democratic Republic of the Congo. The wingspan is about 26 mm. The forewings are pale ochreous, tinged with brownish on the dorsal two-thirds. There is a slender fuscous streak just beneath the costa from the middle to near the apex and a short fuscous dash in the disc at one-fourth. The second discal stigma forms a small transverse dark brown spot and there is a fine black line from beyond the upper edge of this to an irregular fuscous apical spot. The hindwings are dark grey.