Polyhymno inermis is a moth of the family Gelechiidae. It was described by Edward Meyrick in 1913. It is found in Mpumalanga, South Africa.[1] [2]
The wingspan is about 8 mm. The forewings are ochreous brownish with a fine white oblique striga from the costa at two-thirds, the costal edge blackish on each side of this, its apex extended as a leaden-grey line to near the termen beneath the apex, then sharply angulated and continued near the termen to near the tornus. There are two wedge-shaped white marks from the costa towards the apex. The hindwings are grey.[3]