Teldenia helena is a moth in the Drepanidae family. It was described by Wilkinson in 1967. It is found on New Britain and New Ireland. The length of the forewings is 10-12 mm for males and about 12 mm for females. The forewings have a light brown postmedial and subterminal fasciae, the postmedial fascia with a proximal row of brown spots. There are also darker brown terminal spots. The hindwings are as the forewings.