Hemipenthes, Loew, 1869

Key to species of Hemipenthes View in CoL View at ENA from Oriental China

1. Wing infuscation above discal cell elongate, distinctly extended beyond m-m .......................................... 2

- Wing infuscation above discal cell short, not extended beyond m-m ......................................................... 3

2. Wing infuscation at costal margin short, ended before curved tip of R 2+3, cells r 1 and r 2+3 hyaline apically. .............................................................................................................................. H. jezoensis (Matsumura) View in CoL

- Wing infuscation at costal margin long, ended near R 4, cells r 1 and r 2+3 dark apically .................................. ............................................................................................................................... H. montanorum (Austen) View in CoL

3. Wing infuscation at costal margin ended far from curved tip of R 2+3 ............................ H. morio (Linnaeus) View in CoL

- Wing infuscation at costal margin reaching curved tip of R 2+3 .................................................................... 4

4. Cell r 2+3 hyaline apically; phallus dumbbell-like in dorsal view ............................. H. sichuanensis View in CoL sp. nov.

- Cell r 2+3 with an apical spot; phallus quadrate in dorsal view.......................................................................................5

5. Apical part of cell cu-a 1 with relatively large hyaline area, nearly as long as infuscate part; phallus slightly narrowing apically ................................................................................................. H. velutina (Wiedemann) View in CoL

- Apical part of cell cu-a 1 with relatively very small hyaline area, subtriangular, 1/4 as long as infuscate part; phallus not narrowing apically ........................................................................ H. yunnanensis View in CoL sp. nov.