Clanis hyperion Cadiou & Kitching, 1990, Lambillionea 90(4): 9. Type locality: Thailand, Chiang Mai, Mae Taeng, Pamieng Hom Ha, Ban Muang Gai.
Forewing apex falcate; central pale area extends from costa to termen, with almost straight ventral margin. Underside of forewing without black streak. Legs pinkish with no trace of white. Otherwise, very like C. titan.
China: Information not available.
In Thailand, March to October (Inoue, Kennett & Kitching,  1997).
Larval hostplants. Unknown.
China: Yunnan (Gaoligong Shan).
From southern China (Yunnan) to northern Thailand, northeastern India (Nagaland) and Bhutan (Irungbam & Kitching, 2014).
Holarctic; eastern Palaearctic region. Pleistocene refuge: Monocentric -- Yunnan refugium.