Dataminae

Wai-Chun, George Ho, 2013, Contribution to the knowledge of Chinese Phasmatodea II: Review of the Dataminae Rehn & Rehn, 1939 (Phasmatodea: Heteropterygidae) of China, with descriptions of one new genus and four new species, Zootaxa 3669 (3), pp. 201-222 : 202-203

Key to the genera of Chinese Dataminae Rehn & Rehn:

1. Whole body dorso-ventrally flattened; antennae slightly longer than profemora, never surpassing apices of protibiae................................................................................ Planispectrum Rehn & Rehn, 1939

- Whole body cylindrical; antennae distinctly longer than profemora, surpassing apices of protibiae.................... 2.

2. Body robust and thick-built, thorax not parallel-sided and mesonotum distinctly carinate medially in female; mesonotum with spines in male....................................................................... Pylaemenes Stål, 1875

- Body slender and elongate, thorax parallel-sided and mesonotum with indistinct median carina in female; mesonotum unarmed in male............................................................................................ 3.

3. Occiput elevated with a high crest and postero-dorsal carina of meso- and metafemora with three distinct fin-like lamellae in

female; fourth and fifth abdominal terga with distinct hump medio-posteriorly and postero-dorsal carina of meso- and metafemora with three large fin-like lamellae in male................................... Hainanphasma Ho gen. nov. - Occiput lacking high crest and postero-dorsal carina of mesofemora and metafemora with indistinct lamellae in female; fourth and fifth abdominal terga lacking hump and postero-dorsal carina of meso- and metafemora with one to two small teeth in male.............................................................................. Orestes Redtenbacher, 1906