Pentacentrus Saussure

Liu, Hao-Yu, Mao, Shao-Li & Shi, Fu-Ming, 2014, Review of the genus Pentacentrus Saussure (Orthoptera: Gryllidae: Pentacentrinae) from China, Zootaxa 3838 (5), pp. 557-566 : 558

Key to the species of Pentacentrus Saussure from China

1. Genitalia nearly as long as wide, lateral lobes of epiphallus not reaching or slightly extending over posterior margin of epiphal- lus................................................................................................. 2

- Genitalia longer than wide, lateral lobes of epiphallus distinctly extending over posterior margin of epiphallus............ 3

2. Ventral parts of genitalia covered with long and black setae, lateral lobes of epiphallus distinctly bent upwards........................................................................................ P. multicapillus Liu & Shi, 2011

- Ventral parts of genitalia without long and black setae, lateral lobes of epiphallus not bent upwards.................................................................................................. P. parvulus Liu & Shi sp. nov.

3. Apex of epiphallus parameres acute....................................................................... 4

- Apex of epiphallus parameres blunt....................................................................... 6

4. Apex of epiphallus parameres bent downwards; subgenital plate nearly as long as wide......... P. formosanus Karny, 1915

- Apex of epiphallus parameres bent upwards; subgenital plate distinctly longer than wide............................. 5

5. Epiphallus parameres moderately long; posterior margin of supra-anal plate slightly emarginated in middle............................................................................................. P. bituberus Liu & Shi, 2011

- Epiphallus parameres quite long; posterior margin of supra-anal plate distinctly emarginated in middle.......................................................................................... P. acutiparamerus Liu & Shi sp. nov.

6. Lateral lobes of epiphallus double curved; posterior margin of supra-anal plate rounded..... P. biflexuous Liu & Shi sp. nov.

- Lateral lobes of epiphallus unlike above; posterior margin of supra-anal plate emarginated in middle.................... 7

7. Lateral lobes of epiphallus thick, apex blunt; posterior margin of supra-anal plate triangularly emarginated in middle....................................................................................... P. birmanus Chopard, 1969

- Lateral lobes of epiphallus thin, apex acute; posterior margin of supra-anal plate roundly emarginated in middle..................................................................................... P. emarginatus Liu & Shi sp. nov.