Biology Biennial emergence of adults with peak emergece in odd-numbered years for all known populations (cf. biennial patterns in Korscheltellus gracilis). Adults emerge in the autumn and winter.
References Dugdale, J.S. 1994. Hepialidae (Insecta: Lepidopera). Fauna of New Zealand 30, 1-163. Grehan, J. R., and B. H. Patrick. 1984. Bog inhabiting Hepialidae (Lepidoptera) of New Zealand. New Zealand Entomologist 8: 64-67.
Heloxycanus patricki Dugdale, 1994 New Zealand: southern South Island (Map 20, Dugdale, 1994) Flight: March-early June (majority in Apri)