The length of the forewings is 8.6–13 mm. The ground color of the forewings is whitish, with dark brownish gray markings, variable from an almost complete replacement of ground color to a rather distinct pattern. The ground color of the hindwings is semitranslucent white, but pale brownish at the margins. Adults are on wing in April, May, October and December (Barro Colorado Island in Panama), February, March and October (in Costa Rica) and July (in Mexico). There are probably multiple generations per year.
- A Systematic Monograph of New World Ethmiid Moths (Lepidoptera: Gelechioidea)
- A synopsis of the genus Ethmia Hübner in Costa Rica: biology, distribution, and description of 22 new species (Lepidoptera, Gelechioidea, Depressariidae, Ethmiinae), with emphasis on the 42 species known from Área de Conservación Guanacaste
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