Key to species of Borniochrysa

1. Two gradates series of crossveins in forewing............................................................... 2

- Three gradates series of crossveins in forewing.............................................................. 3

2. Brownish stripe present at base of forewing................................................... B. appendiculata

- Brownish stripe at base of forewing absent........................................................ B. squamosa

3. Genal spot ventrad eye absent................................................................... B. luzonica

- Genal spot ventrad eye present........................................................................... 4

4. Gradate veins in forewing pale........................................................................... 5

- Gradate veins in forewing brown......................................................................... 6

5. Each side of scape with red stripe; maxillary, labial palpi yellowish..................................... B. winkleri

- Scape yellowish, unmarked; labial, maxillary palpi brownish black (Fig. 3C, D)................... B. zhenxiana sp. nov.

6. Subcostal part of pterostigma with brown spots; pronotum laterally with a pair of black stripes............... B. solomonis

- Subcostal part of pterostigma pale; pronotum laterally with a pair of reddish brown stripes (Fig. 1C, D) B. kamayaria sp. nov.