Interphasma Chen & He, 2008

Ho, George Waichun & Shi, Fuming, 2013, A new species of the genus Interphasma Chen & He, 2008 (Phasmida: Clitumninae: Medaurini) from Sichuan, China, Zootaxa 3734 (4), pp. 492-496 : 493

Key to the species of the Interphasma Chen & He

Females

1. Seventh sternum lacking distinct preopercular organ ................................................................................................ 2.

- Seventh sternum with distinct preopercular organ ...................................................................................................... 3.

2. Posterior margin of the anal segment with small emargination; posterior apex of subgenital plate reaching posterior margin of anal segment (Distribution: Emeishan, Sichuan) ...................................... I. conicercum Chen & He, 2008

- Posterior margin of anal segment rounded; posterior apex of subgenital plate not reaching posterior margin of anal segment (Distribution: Leigongshan, Guizhou) ........................................ I. leigongshanense Xu, Yang & Guo, 2010

3. Preopercular organ dorsoventrally flattened (Distribution: Emeishan, Sichuan) ........... I. emeiense Chen & He, 2008

- Preopercular organ cylindrical ................................................................................................................................... 4.

4. Posterior apex of preopercular organ bifurcated (Distribution: Emeishan, Sichuan) ........ I. bifidum Chen & He, 2008

- Posterior apex of preopercular organ not bifurcated .................................................................................................. 5.

5. Vertex of head with a pair of granule-like tubercles between compound eyes............................................................ 6.

- Vertex of head lacking granule-like tubercles between compound eyes .................................................................... 7.

6. Body short and robust; posterior margin of anal segment with slight emargination (Distribution: Wolong, Wenchuan, Sichuan) ...................................................................................................................... I. wolongense Chen & He, 2008

- Body long and slender; posterior margin of anal segment with broad emargination (Distribution: Lushan, Jiangxi) .. ...................................................................................................................................... I. lushanense Chen & He, 2008

7. Body densely covered with small granules (Distribution: Tianlin, Guangxi) ............ I. guangxiense Chen & He, 2008

- Body sparsely covered with small granules................................................................................................................. 8.

8. Antennae with 15 segments; anal segment as long as ninth tergum (Distribution: Yang Country, Shaanxi) ................ .................................................................................................................................... I. shaanxiense Chen & He, 2008

- Antennae with 14 segments; anal segment longer than ninth tergum .........................................................................9.

9. Preopercular organ short and not reaching middle of eighth tergum (Distribution: Gaoligongshan, Tengchong, Yunnan) ....................................................................................................................... I. marginatum Chen & Zhang, 2008

- Praeopercular organ long and reaching middle of eighth tergum (Distribution: Liziping, Shimian, Sichuan) ............ ................................................................................................................................... I. lizipingense Ho & Shi sp. nov.