Key to species of adult males of Kribiodorum Kieffer

1 Base of wing dark, cell m1+2 continuously dark from base to subapex; apex of cell cu pale to posterior margin (Fig. 1C)..... 2

- Base of wing pale, mid-cell m1+2 pale, apex of cell cu with dark patch to posterior wing margin (Fig. 1D)................ 4

2 Asian species. Superior volsella digitus hyaline and blunt-ended (Fig. 2B, G)...................... Kribiodorum malicky

- African species. Superior volsella digitus tapering to point or rounded............................................ 3

3. Fore-leg femur with apical dark band, mid-leg femur pale; (Fig. 1K). Anal point spatulate (Fig. 2D)....................................................................................................... Kribiodorum pulchrum

- Fore-leg femur with dark with narrow median pale band, mid-leg femur dark basally (Fig. 1J). Anal point slender (Fig. 2A)...................................................................................... Kribiodorum kunene

4 North American. Larger species, wing length c. 2.5 mm. Fore-leg femur subapex strongly swollen; mid-leg femur with broad dark band, tibia nearly all dark (Fig. 1L). Anal point broadly spatulate (Fig. 2C).............. Kribiodorum perpulchrum

- Asian. Smaller species, wing length c. 1 mm. Fore-leg femur slightly swollen; mid-leg femur and tibia pale (Fig. 1H). Anal point narrow (Fig. 1M)................................................................ Kribiodorum belalong