Subfamily: Stenopogoninae Diagnostic features
Prosternum dissociated by a membranous area from proepisternum.
Wing vein R2+3 ending in Costal vein (C)
Key to the South Korean Species of Stenopogoninae
1. Large, 29-33 mm; amber red flies with clouded yellow wings . . . Stenopogon koreanus sp. n.
- Much smaller, darker flies . . . 2
2. Auxiliary cross vein aligned above (in 1st posterior cell), or positioned slightly basal to, basal vein of 2nd posterior cell; abdomen sharply conical and stout; heavily setose flies . . . Grypoctonus aino Speiser, 1928
- No auxiliary cross vein present . . . 3
3. Medium sized, 11-18 mm; antennal postpedicel yellow . . . Cyrtopogon centralis Loew, 1871
- Smaller flies, 7-10 mm, darker flies, antenna entirely black/light pollinose . . . 4
4. Two distinct bright yellow pollinose abdominal bands on tergites 1 and 3; females unknown . . . Cyrtopogon lateralis (Fallen, 1814)
- Wings with 4 distinct black spots; red-brown pollen on male tergites 6 and 7; females unknown . . . Cyrtopogon quadripunctatus Hermann, 1906