Byrsia dotata is a moth of the family Erebidae. It was described by Francis Walker in 1865. It is found on Sulawesi, Ambon Island, Batchian, Timor and New Guinea.

Subspecies Byrsia dotata dotata Byrsia dotata ornata Rothschild & Jordan, 1901 Byrsia dotata pallidior Rothschild, 1912 Byrsia dotata papuana Rothschild & Jordan, 1901

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