Lethata irresoluta is a moth of the family Depressariidae. It is found in Peru."Lethata Duckworth, 1964" at Markku Savela's Lepidoptera and Some Other Life Forms
The wingspan is about 30 mm. The forewings are fulvous with the costa narrowly deep ochreous underlined with purplish from the base to the apical three-fourths and from the apical three-fourths to the tornus deep yellow. The dorsum is irregularly edged with grey and there is a purplish spot at the end of the cell. The hindwings are whitish.Proceedings of the United States National Museum 122 (3585): 15
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