3a. Parnassius imperator imperator Oberthür, 1883

Parnassius imperator takashii Ohya, 1990; Illustr. Select. Ins. World, A (5): 72, pl. 32, f. 6–8; TL: ‘Yurongshue-Shan’ [Yulong Xueshan, Lijiang, N.W. Yunnan, China]. syn. nov.

Tadumia imperator aino Bryk, 1932; Parnassiana, 2 (1): 5; TL: ‘Yunan. A-tum-tzu, Breite 18°30′, Lange 98°50′, Mekong Valley’ [Mekong Valley, Deqen, N.W. Yunnan, China].

P. imperator inaokai Sorimachi, 2010; Dino, 65: 4, pl. 11G; TL: ‘Habaxueshan 4300–4500m, Yunnan, CHINA’ [Haba Xueshan, Zhongdian, N.W. Yunnan, China]. syn. nov.

Distribution: high mountains in W. and N.W. Yunnan, e.g., Yulong Xueshan, Haba Xueshan, Baima Xueshan, Nu Shan and Meili Xueshan; also found in W. Sichuan.

Note: the taxa takashii Ohya, 1990 and inaokai Sorimachi, 2010 both fall within normal variation of the nominate subspecies and are synonymised here.