Cryptophlebia illepida is a species of moth in the family Tortricidae that is endemic to the islands of Kauaʻi, Oʻahu, Molokaʻi, Maui, Lānaʻi and Hawaiʻi. Common names include koa seedworm, klu tortricid, koa seed moth, litchi borer, litchi moth, macadamia nut borer and macadamia nut moth. The wingspan is 12–25 mm. It is an extremely variable species. The pupal period lasts 8–12 days. When the pupa is first formed it is light brown, then gradually becomes darker, and when time for adult emergence it is almost black.