Key to the Chinese species of Gynnidomorpha based on male genitalia

(the male of G. julianiensis is unknown)

1. Socius dilated distally (Fig. 16)................................................................... mesotypa

- Socius not dilated distally............................................................................. 2

2. Socius nearly parallel-sided..................................................................... rubricana

- Socius narrowed distally.............................................................................. 3

3. Socius pointed apically................................................................................ 4

- Socius rounded apically............................................................................... 5

4. Phallus 2.5 times length of cornutus, thorn-shaped in distal 1/4 (Fig. 12)................................... alismana

- Phallus three times length of cornutus, thorn-shaped in distal 1/3 (Fig. 20)................................. vectisana

5. Socius abruptly narrowed at middle...................................................................... 6

- Socius gradually narrowed............................................................................. 7

6. Socius with distal half about 1/2 width of basal half; phallus strongly attenuate in distal 1/3 (Fig. 14).............. datetis

- Socius with distal half about 1/3 width of basal half; phallus strongly attenuate in distal 1/6 (Fig. 17)........... minimana

7. Cornutus longer than or equal to 1/2 length of phallus....................................................... 8

- Cornutus shorter than 1/2 length of phallus................................................................ 9

8. Socius gradually narrowed in distal 1/2; cornutus about 3/5 length of phallus (Fig. 19).......................... pista

- Socius gradually narrowed in distal 1/3; cornutus about 1/2 length of phallus (Fig. 13)..................... curviphalla

9. Socius broad, distal 1/3 gradually narrowed; cornutus about 1/4 length of phallus (Fig. 15).................... luridana

- Socius narrow, gradually narrowed from base to apex; cornutus about 1/3 length of phallus (Fig. 18).......... permixtana