Eusthenica treicleiota is a species of moth in the Cossidae family and the only species in the genus Eusthenica. It was described by Bethune-Baker in 1911. It is found in Australia, where it has been recorded from Queensland. The wingspan is 26–36 mm. The forewings are whitish-brown, with fuscous-brown fine transverse lines and three fasciae. The hindwings are grey.