Moca purpurascens is a moth in the family Immidae. It was described by George Hampson in 1893. It is found in India.[1]
The wingspan is about 22 mm. Adults are black, with a brilliant purple shot, the forewings with two large yellow triangular spots on the costa. The hindwings have a yellow streak below the cell, curving up to the costa beyond it.[2]
. George Hampson . The Fauna of British India, Including Ceylon and Burma: Moths Volume I . Taylor and Francis . 1892 . 233–234 . Biodiversity Heritage Library.