Key to the worldwide species of Empoasca (Distantasca) (males)

1 Aedeagal shaft with appendages................................................................................................................................... 2

- Aedeagal shaft without appendages............................................................................................................................ 13

2 Aedeagal shaft with two pairs of appendages............................................................................................................... 3

- Aedeagal shaft with one pair of appendages ................................................................................................................ 4

3 Anal tube appendages with large subapical tooth (Fig. 145)................................ E. (D.) paraterminalis Qin & Zhang

- Anal tube appendages without large subapical tooth (Figs. 4, 5) ......................................... E. (D.) terminalis Distant

4 Aedeagal shaft with pair of short appendages .............................................................................................................. 5

- Aedeagal shaft with pair of long appendages ............................................................................................................... 7

5 Anal tube appendages ornamented with small teeth apically (Fig. 61) ............................ E. (D.) latava Dworakowska

- Anal tube appendages without small teeth ................................................................................................................... 6

6 Anal tube appendages with large subapical tooth (Figs. 136, 137) ....................... E. (D.) latibasis Zhang & Liu sp. n.

- Anal tube appendages smooth, without large tooth (Fig. 154) .................................. E. (D.) serratipenis Qin & Zhang

7 Aedeagal shaft appendages ornamented with small teeth apically (Figs. 121, 122) ...................................................... ......................................................................................................................... E. (D.) tuberculata Zhang & Liu sp. n.

- Aedeagal shaft appendages without small teeth apically.............................................................................................. 8

8 Aedeagal shaft and appendages equally broad in profile (Figs. 20, 22).......................... E. (D.) faciata Dworakowska

- Aedeagal shaft broader than its appendages in profile ................................................................................................. 9

9 Aedeagal shaft with a pair of small lateral extensions consisting of small tubercles (Figs. 49, 50) .............................. ......................................................................................................................................... E. (D.) rabava Dworakowska

- Aedeagal shaft without a pair of small lateral extensions .......................................................................................... 10

10 Anal tube appendages with large subapical tooth (Fig. 27)................................................ E. (D.) riora Dworakowska

- Anal tube appendages without large tooth.................................................................................................................. 11

11 Anal tube appendages smooth, without small teeth (Figs. 110, 111)............................. E. (D.) bulbosa Dworakowska

- Anal tube appendages not smooth, with small teeth (Figs. 41, 42, 55) ...................................................................... 12

12 Aedeagus appendages curved mesad at about 1/3 of their length from tip (Figs. 43, 45)..... E. (D.) tna Dworakowska

- Aedeagus appendages not curved strongly mesad (Fig. 56)........................................... E. (D.) barawa Dworakowska

13 Aedeagal shaft with lamellate lateral extensions at ventral margin (Figs. 75, 78) .......... E. (D.) rokasa Dworakowska

- Aedeagal shaft without lamellate lateral extensions................................................................................................... 14

14 Aedeagal shaft strongly expanded ventrad in profile (Figs. 100, 102), anal tube appendages finely serrated at mar- gins...................................................................................................................................... E. (D.) tiaca Dworakowska

- Aedeagal shaft only slightly expanded in profile (Figs. 86, 88), anal tube appendages smooth.................................... ........................................................................................................................................... E. (D.) atika Dworakowska