Key to species of genus Alnetoidia Dlabola from China (males)

1 Pygofer ventral appendage present (Figs 1 d, 2c, 3b, 4b, 5b) (subgen. Alnetoidia)................................... 2

- Pygofer ventral appendage absent (Figs 6 b, 7b, 8b, 9b) (subgen. Alnella)......................................... 10

2 Aedeagal shaft without process (Figs 2 g, h)......................................... A. (Alnetoidia) awla Song & Li

- Aedeagal shaft with process (Figs 1 j, 3g –i, 4i –l, 5k, l)......................................................... 3

3 Aedeagal shaft with single process (Fig. 1 j)........................................ A. (Alnetoidia) alneti (Dahlbom)

- Aedeagal shaft with pair of processes (Figs 3 g–i, 4i –l, 5k, l).................................................... 4

4 Aedeagal shaft with pair of basal processes, slim and long (Figs 4 i–l)............................................ 5

- Aedeagal shaft with pair of apical processes, short (Figs 3 g-i, 5k, l).............................................. 8

5 Aedeagal processes close to shaft (Figs 4 i–l)................................................................ 6

- Aedeagal processes well separated from shaft............................................................... 7

6 Aedeagal shaft almost straight, processes extended from ventro-lateral margin of shaft..................................................................................................... A. (Alnetoidia) dujuanensis Song & Li

- Aedeagal shaft distinctly curved dorsad, processes extended from dorso-lateral margin of shaft (Figs 4 i–l)........................................................................................... A. (Alnetoidia) gracilis sp. nov.

7 Aedeagal shaft with apical part greatly expanded in ventral view................. A. (Alnetoidia) sopha Chiang & Knight

- Aedeagal shaft with apical part as narrow as basal part in ventral view.............. A. (Alnetoidia) leishanensis Song & Li

8 Apical part of style slender...................................................... A. (Alnetoidia) fina Song & Li

- Apical part of style footlike (Figs 3 e, 5i)................................................................... 9

9 Pygofer ventral appendage extended from hind margin of pygofer side (Fig. 3 b)........ A. (Alnetoidia) cedrelae Chou & Ma

- Pygofer ventral appendage extended from ventral margin of pygofer side (Fig. 5 b). A. (Alnetoidia) sikkimensis Dworakowska

10 Pygofer side with 3 macrosetae at inner side of hind margin (Figs 6 b, 9b)........................................ 11

- Pygofer side with several rigid microsetae on hind margin (Figs 7 b, 8b).......................................... 12

11 Aedeagus broad in caudal view, apical margin serrate (Fig. 6 i)............................ A. (Alnella) dentata sp. nov.

- Aedeagus narrow in caudal view, apical margin smooth (Fig. 9 h)...................... A. (Alnella) triseta Dworakowska

12 Apical part of style footlike................................................. A. (Alnella) watanabei Dworakowska

- Apical part of style slender (Figs 7 e, 8e).................................................................. 13

13 Style with a small process on outer margin near preapical lobe (Fig. 7 e).............. A. (Alnella) orientalis Dworakowska

- Style without process (Fig. 8 e)................................................ A. (Alnella) sudzuchenica Anufriev