Key to the Palearctic species of the genus Dichetophora

1. Two scutellar setae present.............................................................................. 2

- One scutellar seta present.............................................................................. 4

2. Anterior fronto-orbital seta longer than posterior fronto-orbital seta............................... japonica Sueyoshi

- Anterior fronto-orbital seta shorter than posterior fronto-orbital seta............................................. 3

3. Postpedicel shorter than pedicel; knob-like projection of surstylus bulge in lateral view (Fig. 2B); distinct structure of the sternite 5 (Fig. 2G)......................................................................... koreana sp. nov.

- Postpedicel longer than the pedicel; knob-like projection of surstylus flat in lateral view.............. meleagris (Hendel)

4. One post-alar seta present................................................................ finlandica Verbeke

- Two post-alar setae present.............................................................................. 5

5. Bases of anterior and posterior fronto-orbital setae covered by single large black spot................ kumadori Sueyoshi

- Bases of anterior and posterior fronto-orbital setae covered by separate black spots................................. 6

6. Male surstylus densely covered with long setulae on basally; body-color brown................... obliterata (Fabricius)

- Male surstylus with only 5-6 setulae basally; body-color black.................................. nigricorpa sp. nov.