Jankowskia

Jiang, Nan, Xue, Dayong & Han, Hongxiang, 2010, A review of Jankowskia Oberthür, 1884, with descriptions of four new species (Lepidoptera: Geometridae, Ennominae), Zootaxa 2559, pp. 1-16 : 3-4

Key to Jankowskia species

1. Outer margin of forewing almost straight..................................................................................................................... 2

- Outer margin of forewing weakly protruded ................................................................................................................ 8

2. Medial line on hindwing more than thrice width of postmedial line ....................................................... J. taiwanensis

- Medial line on hindwing less than or about twice width of postmedial line ................................................................ 3

3. Postmedial line on forewing broadened below M3 .............................................................................. J. curva sp. nov.

- Postmedial line on forewing not broadened below M3 ................................................................................................. 4

4. Tegumen posterior processes short and triangular ................................................................................ J. acuta sp. nov.

- Tegumen posterior processes long and digitiform ........................................................................................................ 5

5. Medial line on hindwing indistinct; juxta almost symmetrical .................................................................................... 6

- Medial line on hindwing distinct; juxta asymmetrical.................................................................................................. 7

6. Hindwing basal area pale greyish brown; valva broadened terminally ........................................................... J. athleta

- Hindwing basal area dull greyish brown; valva not broadened terminally ............................................ J. pseudathleta

7. Postmedial line on hindwing protruded inwards below M3; tegumen posterior processes long ..... J. fuscaria fuscaria

- Postmedial line on hindwing almost straight; tegumen posterior processes short .............................. J. fuscaria naitoi

8. Transverse lines indistinct; juxta with median dorsal process ..................................................... J. improjecta sp. nov.

- Transverse lines distinct; juxta left side with process................................................................................................... 9

9. Postmedial line weak and brown on both wings underside; juxta left process stick-like........................................... 10

- Postmedial line strong and black on both wings underside; juxta left process hook-like .............................................. ................................................................................................................................................... J. obtusangula sp. nov.

10. Postmedial line on forewing slightly protruded outwards between M1 and M3................... J. bituminaria bituminaria

- Postmedial line on forewing strongly protruded outwards between M1 and M3 ..................... J. bituminaria raddensis