Erechthias capnitis is a moth of the family Tineidae, first described by Alfred Jefferis Turner in 1918. It is originally endemic to Norfolk Island and is recorded as having arrived in New Zealand by 1977. This species can be found in the north half of the North Island of New Zealand as well as in New Plymouth and Wellington. Larvae feed on dry dead wood as well as on Cordyline australis. Adult moths are on the wing throughout the year and are attracted to light.

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