Heteralcis molybdantha is a moth in the family Lecithoceridae. It was described by Edward Meyrick in 1908. It is found in Sri Lanka.[1]
The wingspan is about 14 mm. The forewings are dark fuscous sprinkled with black, with scattered ochreous hair-scales and thick bluish-leaden-metallic subcostal and narrower submedian streaks from the base to one-third, as well as an almost straight double antemedian fascia, the first half narrow, yellow ochreous, edged posteriorly with dark fuscous, the second half broader, bright bluish leaden metallic. Some irregular leaden-metallic spots are found in the disc about three-fourths and around the posterior third of the costa and termen, around the apex confluent into a streak. The hindwings are dark fuscous with a short subdorsal groove from the base, containing an expansible pencil of whitish ochreous hairs.[2]