Smerinthulus witti Brechlin, 2000, Nachr. ent. Ver. Apollo (N.F.) 21: 103. Type locality: China, Yunnan, Dali Bai Autonomous Prefecture, Yunlong County, Fengshuining Mts, 13km north of Caojian, 25°46'N 99°06'E, 2460m.
Larval hostplants. Unknown.
China: Yunnan (13km N Caojian, 2460m); Guangxi (Jinxiu, Dayao Shan, 1700m).
Endemic to Yunnan and Guangxi, China.