Sepedon

Li, Zhu & Yang, Ding, 2017, Sepedon (Diptera: Sciomyzidae) species from China, with notes on taxonomy and distribution, Zootaxa 4254 (3), pp. 301-321 : 303

Key to species of Sepedon known from China

1. Frons without black orbital spot; frons black, bluish black or brown, with or without metallic luster....................2

- Frons with round or oval velvety black orbital spots; frons generally brown, without metallic luster.....................5

2. Velvety black parafacial spot between eye and antenna present, but velvety black parafacial spot usually below level of antenna....................................................................................................3

- Velvety black parafacial spot between eye and antenna absent...................................................4

3. Body slender and smaller, bluish black; scape yellowish to pale brown and distinctly lighter than pedicel; legs yellow; middle protuberance of cerci conspicuous............................................................... S. aenescens

- Body stout and larger, darker black; scape dark brown to black, concolorous with other antennal segments; legs reddish; mid- dle protuberance of cerci inconspicuous........................................................... .. S. sphegea

4. Fore basitarsus distinctly twisted and with distinct groove in males (normal in females); all antennal segments concolorous, blackish brown; frons mainly dark brown except for yellow anterior margin between antennae............... S. plumbella

- Fore basitarsus normal in both sexes; antennal scape yellowish brown, distinctly lighter than pedicel; frons mainly yellowish brown, only darker brown around orbital setae.......................................................... S. senex

5. Parafacial spots between eye and antenna absent.............................................................6

- Velvety black parafacial spots between eye and antenna present.................................................7

6. Frons without orbital setae; scutellar setae absent..................................................... S. lobifera

- Frons with pair of orbital setae; scutellum with pair of apical setae.................................... S. ferruginosa

7. Posterior crossvein straight; hind tibia yellow with apical and medial brown rings............................ S. noteoi

- Posterior crossvein bowed; hind tibia concolorous yellow without brown rings............................. S. spinipes