Aucha is a genus of moths of the family Noctuidae.

Description Its eyes are naked and without lashes. The proboscis is well developed. Palpi upturned and smoothly scaled, where the second joint reaching above vertex of head, and third joint short. Antennae simple. Thorax and abdomen without tufts and smoothly scaled. Tibia spineless. Forewings with non-crenulate cilia and hindwings produced at apex.

Species Aucha melaleuca Berio, 1940 Aucha polyphaenoides (Wiltshire, 1961) Aucha tenebricosa (Saalmüller, 1891) Aucha triphaenoides Walker, 1865 Aucha velans Walker, Aucha vesta Swinhoe, 1901

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