Spirama retorta

It is found in China (Tibet, Qinghai, Jiangsu, Fukien, Yunnan), Korea, Japan (Honshu),[3] India (Sikkim, West Bengal), Nepal, Bangladesh, Thailand, Cambodia, Myanmar, Vietnam, Taiwan, Sri Lanka, Malaysia, the Philippines (Luzon), Indonesia (Java, Sulawesi),Japan (Ryukyu Islands).

Male with a fold on inner area of hindwing, containing an erectile ridge of very long hair.

Forewing with the costal and outer area more or less suffused with purplish and sometimes with an olive tinge.

Ventral side is suffused with dull red and having two medial lines and single postmedial to each wing.

Ventral side orange-scarlet colored, each wing with cell-spot, medial, postmedial and submarginal lines and series of lunules inside the margin.

Predators like Sycanus leucomesus, Cantheconidea furcellata, Mallada basalis, and Vespa affinis are observed to feed on the caterpillars.