Key to Chinese species of Eudonia based on male genitalia

(excluding E. gigantea Sasaki whose male is unknown)

1. Gnathos without arm................................................................................. 2

- Gnathos with two arms................................................................................ 8

2. Phallus as long as valva............................................................................... 3

- Phallus about twice as long as valva..................................................................... 6

3. Valva with base wider than apex........................................................................ 4

- Valva with base narrower than apex...................................................................... 5

4. Uncus with spine on both posterolateral margins (Fig. 22)..................................... E. duospinata sp. n.

- Uncus without spine (Fig. 21)............................................................... E. magna sp. n.

5. Phallus curved near base (Sasaki 1991: Fig. 21)................................................ E. microdontalis

- Phallus straight near base (Sasaki 1991: Fig. 23)................................................... E. persimilis

6. Uncus ending with ovate hatch (Fig. 23)....................................................... E. cavata sp. n.

- Uncus without hatch.................................................................................. 7

7. Costa convex at middle (Sasaki 1998: Fig. 34)..................................................... E. albilinea

- Costa straight at middle (Sasaki 1991: Fig. 22)..................................................... E. puellaris

8. Valva with distal one third tapering to apex................................................................ 9

- Valva with distal part broadened or same width........................................................... 13

9. Uncus notched or convex on posterior margin............................................................. 10

- Uncus straight on posterior margin..................................................................... 12

10. Uncus convex posteriorly (Sasaki 1998: Fig. 32).................................................... E. owadai

- Uncus notched posteriorly at middle.................................................................... 11

11. Valva angled ventrally at two thirds, phallus straight (Sasaki 1998: Fig. 35)........................... E. taiwanalpina

- Valva arched ventrally at two thirds, phallus curved at middle (Fig. 18)....................... E. zhongdianensis sp. n.

12. Phallus nearly as long as valva (Sasaki 1998: Fig. 31)................................................. E. inouei

- Phallus about half length of valva (Sasaki 1998: Fig. 33)............................................. E. umbrosa

13. Valva broadened distally............................................................................. 14

- Valva not broadened distally.......................................................................... 18

14. Phallus straight..................................................................................... 15

- Phallus curved at middle............................................................................. 16

15. Gnathos as long as uncus (Fig. 19)............................................................ E. furva sp. n.

- Gnathos two thirds length of uncus (Sasaki 1998: Fig. 25)........................................... E. promiscua

16. Valva concave ventrally at about two fifths (Fig. 15)......................................... E. rectilineata sp. n.

- Valva straight ventrally............................................................................... 17

17. Juxta with width one third of length (Nuss 2005: Fig. 107)........................................ E. truncicolella

- Juxta with width half as long as length (Fig. 16)............................................ E. wolongensis sp. n.

18. Valva with base much wider than apex.................................................................. 19

- Valva with base narrower than or as wide as apex.......................................................... 20

19. Valva almost straight ventrally (Fig. 17)................................................... E. lijiangensis sp. n.

- Valva conspicuously concaved ventrally at middle (Fig. 20)..................................... E. hexamera sp. n.

20. Valva with base much narrower than apex................................................................ 21

- Valva with base nearly as wide as apex.................................................................. 22

21. Valva straight ventrally, phallus curved at middle (Nuss 2005: Fig. 81)................................ E. mercurella

- Valva concave ventrally at one third, phallus nearly straight (Sasaki 1999: Fig. 6)........................ E. apicifusca

22. Valva with a ventroapical protuberance (Nuss 2005: Fig. 84)......................................... E. lacustrata

- Valva without such a protuberance...................................................................... 23

23. Phallus straight, shorter than valva (Fig. 24)........................................................ E. tibetalis

- Phallus slithtly curved, longer than valva (Fig. 14)........................................ E. singulannulata sp. n.