Tupac castanea is a species of moth in the family Apatelodidae that was first described by E. Dukinfield Jones in 1908. It is found in Paraná, Brazil."Descriptions of New Species of Lepidoptera-Heterocera from South-East Brazil"
Description The wingspan is about 40 mm. The forewings are chestnut brown with conspicuous dark slightly excurved ante- and post-medial lines. There is a minute white spot near the apex and a minute dark point on the discocellulars. The hindwings are chestnut-brown, but ochreous at the base.
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