Promenesta isotrocha is a moth in the family Depressariidae. It was described by Edward Meyrick in 1918. It is found in Argentina.Promenesta at Markku Savela's Lepidoptera and Some Other Life Forms.
The wingspan is about 16 mm. The forewings are light yellow, with the second discal stigma small and grey. The hindwings are pale ochreous-yellowish.Exotic Microlepidoptera 2 (7): 209
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