Key to species of Limnellia from China

1. Three distinct large white spots in R1 cell; palpi light brown or black ......................................................................... 2

- Four distinct large white spots at least in R1 cell; palpi yellow. ................................................................................... 3

2. Palpi light brown; legs entirely black ........................................................................................ L. luchunensis sp. nov.

- Palpi black; fore tarsomeres 1–2 yellow. ................................................................................ L. maculipennis Malloch

3. Fore tarsomeres 1–2 yellow; halters light brownish ..................................................................... L. flavitarsis sp. nov.

- Legs entirely black; halters black ..................................................................................... L. stenhammari (Zetterstedt)