Thallarcha epiostola is a moth in the subfamily Arctiinae. It was described by Alfred Jefferis Turner in 1926. It is found in Australia, where it has been recorded from Tasmania,"Species Thallarcha epiostola Turner, 1926". Australian Faunal Directory. (8 November 2010). Archived from the original 24 September 2015. New South Wales and Victoria.
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