Madasumma yunnana

Libin, Ma & Yalin, Zhang, 2012, The crickets of genus Zvenella Gorochov, 1988 (Gryllidae: Podoscirtinae) from China, Zootaxa 3597, pp. 57-67 : 59

Key to species of the Yunnana group of genus Zvenella

1. Epiphallus armed with one pair of processes................................................................ 2

- Epiphallus armed with two paired large upper processes....................................... Albomaculata Group

2. Epiphallus armed with non-denticulate or slightly denticulate lower apical lobes and hind lateral lobes curved.................................................................................................. Parcevenosa group

- Epiphallus armed with denticulate lower apical lobes and short hind lateral lobes..................... Yunnana Group: 3

3. Lower apical lobes of epiphallus extend outwards in profile......................... Zvenella pulchella Gorochov, 1988

- Not show this........................................................................................ 4

4. Processes of epiphallus short and wide (caudal view)......................................................... 5

- Processes of epiphallus long and thin...................................................................... 7

5. Metanotal gland armed with two oval-shaped and wrinkled grooves distally at sides................................. 6

- Not show this.............................................................. Zvenella chopardi Gorochov, 2002

6. Hind lateral lobes very long and overlap each other medially at the bottom of epiphallus....... Zvenella decussatus sp. nov.

- Hind lateral lobes somewhat shorter and far away from each other at the bottom of epiphallus................................................................................................. Zvenella geniculata ( Chopard, 1931)

7. Hind lateral lobes of epiphallus short and very narrow........................................................ 8

- Hind lateral lobes of epiphallus short but widen............................................................. 10

8. The inner margins of the epiphallus’ lower apical lobes straight or convex......................................... 9

- The inner margins of the epiphallus’ lower apical lobes concave and inner branch as long as the outer one................................................................................................ Zvenella aequalis sp. nov.

9. Epiphallus’ lower apical lobes rounded (caudal view).............................. Zvenella modesta Gorochov, 2002

- Epiphallus’ lower apical lobes short but not rounded.............................. Zvenella yunnana ( Gorochov, 1985)

10. The dorsal process of epiphallus directed cephalad and in an acute angle with the dorsum of the epiphallus.............. 11

- The dorsal process of epiphallus almost erected............................................................. 12

11. Epiphallus’ lower median notch narrowed............................................ Zvenella scalpratus sp. nov.

- Epiphallus’ lower median notch very wide........................................ Zvenella cognata Gorochov, 1992

12. Hind lateral lobes wide and notch between the lobes of upper apical and hind lateral narrowed.......................................................................................... Zvenella acutangulata Xia, Liu & Yin, 1991

- Hind lateral lobes slightly narrow and notch between the lobes of upper apical and hind lateral somewhat broad..................................................................................... Zvenella transversa Ingrisch, 1997