Key to known Arboridia species of China

(modified from Song & Li, 2013)

1 Preatrium of aedeagus small or absent (Arborifera) (Fig. 26)............................................ A. surstyli

- Preatrium of aedeagus large, well developed ( Arboridia)...................................................... 2

2 Aedeagus without process............................................................................... 3

- Aedeagus with processes................................................................................ 4

3 Aedeagal shaft with pair of serrate lateral flanges (Fig. 28)........................................... A. zhenyuana

- Aedeagal shaft with lateral flanges entire (Fig. 16)................................................. A. agrillacea

4 Aedeagus with one process.............................................................................. 5

- Aedeagus with more than one processes.................................................................... 7

5 Aedeagus with short process arising from median part of shaft.................................................. 6

- Aedeagus with long process arising from preatrium (Fig. 18)........................................... A. apicalis

6 Aedeagus with dorsal apodeme extremely expanded (Fig. 25).......................................... A. sinensis

- Aedeagus with dorsal apodeme narrow (Fig. 27)..................................................... A. tridenta

7 Aedeagus with one or two pairs of processes................................................................ 8

- Aedeagus with three or more processes................................................................... 14

8 Aedeagus with two pairs of processes, one arising from apex and one from base of shaft (Figs 13, 14).. · A. ochracea sp. nov.

- Aedeagus with one pair of processes arising from apex or base of aedeagal shaft.................................. ·9

9 Aedeagus with processes arising from base of shaft.......................................................... 10

- Aedeagus with processes arising from apex of shaft......................................................... 11

10 Aedeagus with two pairs of basal processes (Fig. 17).............................................. A. anteoculara

- Aedeagus with one pair of basal processes (Fig. 22).................................................... A. lunula

11 Apical processes of aedeagus curved basad................................................................ 12

- Apical processes of aedeagus curved distad................................................................ 13

12 Apex of aedeagus truncate in ventral view (Fig. 24)................................................ A. reniformis

- Apex of aedeagus acuminate in ventral view (Fig. 6)............................................. A. cincta sp. nov.

13 Aedeagal shaft with numerous short spines (Fig. 21).................................................. A. echinata

- Aedeagal shaft without spines (Fig. 20)........................................................ A. cuihuashana

14 Aedeagal shaft with distinct extension medially (Fig. 19)........................................... A. baiyunensis

- Aedeagal shaft without extension (Fig. 23)..................................................... A. paraprocessa