Key to species of Kuwayamachrysa

1. Hind wing costal crossveins brown....................................................................... 2

- Hind wing costal crossveins mostly pale green (Fig. 5A)....................................... K. neptuna sp. nov.

2. Terga without red stripes; flat pieces of gonapsis with serrated edge (Fig. 2F)............................. … K. kichijoi

- Red stripes present on terga; flat pieces of gonapsis with smooth edge (Fig. 4F)................. K. wujiaoensis sp. nov.