Metallarcha thiophara is a moth in the family Crambidae. It was described by Turner in 1917. It is found in Australia,[1] where it has been recorded from Western Australia.[2]
The wingspan is about 23 mm. The forewings are pale yellow with fuscous markings. There is a costal streak from the base and a short inwardly oblique fine streak from the dorsum, as well as a broad terminal band. The hindwings are pale ochreous with some pale fuscous irroration and a large pale fuscous apical patch.[3]
It is found in South Australia, Western Australia, and the Northern Territory.[4]
