Key to males of Agnesiella from China (updated from Yan & Yang, 2016)

1. Setae arranged in well-differentiated groups on pygofer side and subgenital plate................................... 2

- Setae reduced in number and regularly distributed on pygofer side and subgenital plate.............................. 7

2. Pronotum with large lobate black marking on disc............................................................ 3

- Pronotum without large lobate black marking on disc......................................................... 5

3. Aedeagus with colorless subapical dorsal lamella incised.................................... Agnesiella (s.str) buysi

- Aedeagus with colorless subapical dorsal lamella entire....................................................... 4

4. Pronotum medially with fusiform patch............................................. Agnesiella (s.str) matsumurai

- Pronotum medially without fusiform patch.......................................... Agnesiella (s.str) lyraeformis

5. Pronotum with seven black spots..................................................... Agnesiella (s.str) nitobella

- Pronotum with fewer than seven black spots................................................................ 6

6. Pronotum with five black spots....................................................... Agnesiella (s.str) giranna

- Pronotum with three black spots..................................................... Agnesiella (s.str) juglandis

7. Setae of pygofer side on ventral basal and posteroventral margin................................................ 8

- Setae of pygofer side on medial part and posteroventral margin................................................. 9

8. Body yellow, crown with three dark patches, aedeagus ventral lamella broad and serrate (Fig. 116)................................................................................................ Agnesiella (D.) sinnuata sp. nov.

- Body brownish, crown with five dark patches, aedeagus ventral lamella smooth................... Agnesiella (D.) latusa

9. Ventral pygofer appendage bifurcated (Fig. 98)..................................... Agnesiella (D.) rita, new record

- Ventral pygofer appendage not bifurcated................................................................. 10 10. Ventral appendage extended to dorsal margin of pygofer side.................................................. 11 - Ventral appendage shorter, not extended elongate to dorsal margin of pygofer side................................. 14 11. Subapical tooth bifurcated on paramere (Figs 107, 109)........................... Agnesiella (D.) roxana, new record - Subapical tooth not bifurcated on paramere................................................................ 12 12. Paramere subapical tooth nearly equal to apex in length (Fig. 68).................... Agnesiella (D.) aldera, new record - Paramere subapical tooth very small...................................................................... 13 13. Shaft of aedeagus with serrated margins (Figs 83, 84)................................ Agnesiella (D.) ela, new record - Shaft of aedeagus with smooth margins (Fig. 78)...................................... Agnesiella (D.) digita sp. nov. 14. Apex of ventral process on aedeagus, bifurcated............................................................ 15 - Apex of ventral process on aedeagus, not bifurcated......................................................... 17 15. Forewing with symmetrical patches...................................................................... 16 - Forewing with without symmetrical patches................................................. Agnesiella (D.) azra 16. Face yellowish, with two black patches below antennal pits................................... Agnesiella (D.) xantha - Face mostly dark, or brown (Figs 17, 20)............................................ Agnesiella (D.) furca sp. nov. 17. Shaft of aedeagus serrated at ventral margin................................................. Agnesiella (D.) erosa - Shaft of aedeagus smooth at margins (Figs 96, 97)................................... Agnesiella (D.) innota sp. nov.