Key to the species of Xenoplatyura known from China

1. Tergite IX bilobed and elongated (Fig.17) ........................................................... X. bifida Cao et Xu, n. sp.

-. Tergite IX not bilobed.................................................................................................................................. 2

2. Wing unmarked ................................................................................................ X. octosegmentata (Brunetti)

-. Wing with infuscation at tip......................................................................................................................... 3

3. Antennae predominantly dark brown; tergite IX slightly elongated (Fig. 6) ................................................ .................................................................................................................. X. sichuanensis Cao et Xu, n. sp.

-. Antennae yellow; tergite IX broader on basal half (Fig. 10) .................................. X. lata Cao et Xu, n. sp.