Key to the subgenera of Minettia and the species unplaced in a subgenus

(modified from Shi et al., 2015)

1. Katepisternum with one strong katepisternal seta.................................... subgenus Minettiella Malloch

- Katepisternum with two katepisternal setae................................................................. 2

2. Mesonotum with 0+2–3 long acrostichal setulae (longer than surrounding hair-like acrostichal setulae)................. 3

- Mesonotum (Fig. 163) with 2+4 long acrostichal setulae................................. M. baihualingensis sp. nov.

3. Lower part of face with a distinct, slight and weakly round swelling on each side................................... 4

- Lower part of face without round swelling on each side....................................................... 5

4. Basal part of wing black; arista long plumose, rays of arista with longest setulae longer than height of 1st flagellomere (rarely shorter than height of 1st flagellomere); male genitalia: two pairs of ventral hypandrial appendages (including some Palaearctic and Oriental species)............................................................. subgenus Frendelia Collin

- Basal part of wing yellow; arista short plumose, rays of arista with longest setulae as long as 1/2 height of 1st flagellomere; male genitalia: one pair of ventral hypandrial appendages............................... subgenus Scotominettia Shatalkin

5. Arista pubescent, rays of arista with longest setulae as long as or shorter than1/4 height of 1st flagellomere, sometimes bare; male genitalia: phallic sheath absent.......................................... subgenus Plesiominettia Shatalkin

- Arista pubescent or plumose, rays of arista with longest setulae longer than 1/3 height of 1st flagellomere; male genitalia: phallic sheath present................................................... subgenus Minettia Robineau -Desvoidy