Erechthias stilbella is a species of moth in the family Tineidae. It was first described by Edward Doubleday in 1843. This species is endemic to New Zealand and is found in the North and South Islands. This species inhabits native forest and bush and can also be found in domestic gardens. Larvae feed on dead plant debris or tough leaves of plants such as palms. Adults are on the wing from October until March. Adults rest on tree trunks or fences during the day.

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