Beybienkoana Gorochov

Liu, Hao-Yu & Shi, Fu-Ming, 2012, A contribution to the taxonomy of the genus Beybienkoana Gorochov (Orthoptera: Gryllidae: Euscyrtinae), Zootaxa 3174, pp. 59-64 : 60

Key to the species of Beybienkoana Gorochov (males) from China

1 Head distinctly longer than wide.......................................................................... 2

- Head nearly as long as wide............................................................................. 3

2 Anterior groove of metanotal gland larger than posterior one; hind wings extending to middle of cerci................................................................................................ B. formosana (Shiraki, 1930)

- Anterior groove of metanotal gland almost as large as posterior one; hind wings extending to apices of cerci....................................................................................... B. longipennnis (Liu & Yin, 1993)

3 Head with light yellow longitudinal stripes in middle and both sides of dorsum; anterior groove of metanotal gland trapeziform.................................................................................................... 4

- Head with light yellow longitudinal stripes on both sides of dorsum, absent in middle; anterior groove of metanotal gland not trapeziform.......................................................................................... 5

4 Eyes round in lateral view; posterior groove of metanotal gland nearly round; inner margin of ventral side of epiphallic paramere with right-angled concave at apex................................................... B. trapeza sp. nov.

- Eyes oval in lateral view; posterior groove of metanotal gland trapeziform; inner margin of ventral side of epiphallic paramere with arcuate concave at apex............................................................ B. ditrapeza sp. nov.

5 Body small (12.0–13.0mm); eyes round in lateral view; anterior groove of metanotal gland square; inner margin of ventral side of epiphallic paramere with short arcuate concave at apex................................. B. parvula Shi & Liu, 2007

- Body large (24.5mm); eyes oval in lateral view; anterior groove of metanotal gland oblong; inner margin of ventral side of epiphallic paramere with long arcuate concave at apex.......................................... B. majora sp. nov.