Key to adult females of Atrichadenotecnum

1. Submarginal markings in fore wing not extending to wing margin, appearing as distinct spots......................... 2

-. Submarginal markings in fore wing extending to wing margin and continuous..................................... 3

2. Fore wing with submarginal markings in cell R3............................................. A. quinquepunctatum

-. Fore wing without markings in cell R3...................................................... A. quadripunctatum

3. Fore wing with submarginal markings in cell R3............................................................. 4

-. Fore wing without markings in cell R3..................................................................... 5

4. Fore wing cell M2 with large spot on basal half, subgenital plate with prominent row of long setae curved anteriorly in the mid- dle....................................................................................... A. yoshizawai

-. Fore wing cell M2 without large spot on basal half, subgenital plate with prominent row of long setae not curved anteriorly in the middle................................................................................. A. nebulosum

5. Subgenital plate without median sclerotized band, or only with distinct markings antero-medially..................... 6

-. Subgenital plate with median sclerotized band............................................................. 10

6. Fore wing with pterostigma entirely brown................................................................. 7

-. Fore wing with pterostigma hyaline basally................................................................ 8

7. Fore wing with clouds of markings at basal half, subgenital plate with pigmented arm narrow posteriorly..... A. umbratum

-. Fore wing without clouds of markings at basal half, subgenital plate with pigmented arm wide............... A. forcipata

8. Subgenital plate with pigmented arm narrow posteriorly, not extending to margin........................... A. nudum

-. Subgenital plate with pigmented arm wide posteriorly, almost extending to margin................................. 9

9. Fore wing with nodal band continuous, Rs-M fusion almost as long as 1st section of Rs............... A. guangzhouensis

-. Fore wing with nodal band discontinuous, Rs-M fusion shorter that half of 1st section of Rs................. A. laricolum

10. Fore wing with pterostigma entirely brown, subgenital plate with pigmented arm narrow posteriorly, not extending to margin.......................................................................................... A. ryukyuense

-. Fore wing with pterostigma hyaline basally, subgenital plate with pigmented arm wide posteriorly, almost extending to margin.......................................................................................... A. trifurcatum