Cophomantella furnaria is a moth in the family Lecithoceridae. It was described by Edward Meyrick in 1913. It is known from South Africa. The wingspan is 12–13 mm. The forewings are dark fuscous with a whitish-ochreous antemedian fascia, straight and sharply defined anteriorly, broadly suffused posteriorly, followed by a blackish-fuscous discal dot. The posterior area is lighter and somewhat sprinkled with whitish ochreous, with a whitish-ochreous line running from the costa about three-fourths to the dorsum before the tornus, angulated inwards above the middle and outwards in the middle, well-defined anteriorly but more or less suffused posteriorly, forming a spot or patch on the costa. The hindwings are whitish ochreous, more or less infuscated (darkened) towards the apex.