The final instar of Bayadera strigata Davies & Yang, 1996, from Yunnan Province, China, is described and illustrated for the first time. This study confirms several characters as being typical of, or unique to, the genus Bayadera and discusses them in comparison to other genera. The larva of B. strigata is distinguished from its congeners by the presence of numerous distinct short spines on the genae, but no long spines. The gonapophyses are unusually long in both sexes. Notes on this species’ habitat and behaviour are provided. The material examined will be stored at the Bioscience Museum of Dali University, Dali, Yunnan, China.