Sinophasma Günther

Ho, George Wai-Chun, 2012, Notes on the genera Sinophasma Günther, 1940 and Pachyscia Redtenbacher, 1908 (Phasmatodea: Diapheromeridae: Necrosciinae), with the description of four new species from China, Zootaxa 3495, pp. 57-72 : 59-60

Key to males of Sinophasma Günther :

1. Cerci non-cylindrical................................................................................. 2.

- Cerci cylindrical..................................................................................... 7.

2. Ninth tergum 2 x length of eighth tergum........................................................... S. mirabile

- Ninth tergum as long as or 1.5 x length of eighth tergum...................................................... 3.

3. Apices of cerci broadened....................................................................... S. obvium

- Apices of cerci pointed................................................................................ 4.

4. Cerci tapering posteriorly.............................................................................. 5.

- Cerci furcated....................................................................................... 6.

5. Hind margin of poculum rounded............................................................. S. hainanensis

- Hind margin of poculum elongate posteriorly................................................ S. daoyingi sp. nov.

6. Anal segment triangularly emarginated at hind margin, cerci strongly furcated, exterior bifurcation as long as interior bifurca- tion........................................................................... S. guangdongensis sp. nov.

- Anal segment shallowly emarginated at hind margin, cerci lightly furcated, exterior bifurcation 2 x length of interior bifurca- tion.................................................................................. S. pseudomirabile

7. Anal segment with one to three spines.................................................................... 8.

- Anal segment lacking spine............................................................................. 9.

8. Anal segment with one spine................................................................. S. unispinosum

- Anal segment with three spines................................................................ S. trispinosum

9. Ninth tergum helmet-shaped in dorsal view, ninth tergum larger than eighth tergum and larger than anal segment....... 10.

- Ninth tergum not helmet-shaped, ninth tergum longer than eighth tergum and larger than anal segment............... 13.

10. Ninth tergum parallel to anal segment................................................................... 11.

- Ninth tergum with anal segment vertical................................................................. 12.

11. Femora and anterior portions of alae spotted.......................................................... S. hoenei

- Femora and anterior portions of alae not spotted..................................................... S. striatum

12. Anal segment rather broad, apex not furcated...................................................... S. brevipenne

- Anal segment rather long, apex furcated.......................................................... S. angulatum

13. Hind margin of eighth tergum widest among the apical three tergites........................................... 14.

- Hind margin of ninth tergum widest among the apical three tergites or ninth tergum as wide as eighth tergum.......... 17.

14. Ninth tergum with anal segment at obtuse angle........................................................... 15.

- Ninth tergum with anal segment nearly vertical............................................................ 16.

15. Hind margin of anal segment slightly emarginated.................................................. S. curvatum

- Hind margin of anal segment triangularly emarginated............................................. S. vietnamense

16. Hind margin of anal segment shallowly cleft...................................................... S. klapperichi

- Hind margin of anal segment deeply cleft.......................................................... S. latisectum

17. Ninth tergum with anal segment at obtuse angle........................................................... 18.

- Ninth tergum with anal segment at straight angle........................................................... 21.

18. Poculum lacking processes..................................................................... S. truncatum

- Poculum with two asymmetrical processes................................................................ 19.

19. Anal segment short, poculum broad.......................................................... S. maculicruralis

- Anal segment elongate, poculum with clavate apex......................................................... 20.

20. Apex of poculum not reaching end of abdomen................................................. S. biacuminatum

- Apex of poculum reaching end of abdomen........................................................ S. rugicollis

21. Anal segment nearly rectangular, hind margin truncate...................................................... 22.

- Anal segment short widely, nearly at straight angle downward................................................ 23.

22. Process of poculum horn-shaped distally............................................................ S. largum

- Process of poculum valvular distally............................................................... S. atratum

23. Lateral angles of anal segment square-shaped..................................................... S. bii sp. nov.

- Lateral angles of anal segment pointed................................................................... 24.

24. Lateral angles of anal segment flat and broad........................................................ S. furcatum

- Lateral angles of anal segment slender and long.................................................... S. jinxiuense