Eudonia chlamydota is a moth in the family Crambidae. It was named by Edward Meyrick in 1884. It is endemic to New Zealand and is found in the North and South Islands. This species inhabits native forests at up to 3000 ft. Larvae feed on moss, building a silken shelter at the base of the plant from which to feed. They pupate in a cocoon within that shelter. Adults are on the wing commonly from December until February but have also been observed in the New Zealand winter. They are known to frequent Hoheria lyallii and are attracted to light.

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