Subfamily Dioctriinae

Subfamily: Dioctriinae Diagnostic features

Prosternum dissociated by a membranous area for proepisternum.

Antenna as long as or longer than height of head, situated on a high tubercle

near the vertex. Antenna elongate, slender, with apical, spoon-shaped micro-segment enclosing a spine.

Small, delicate, asetose flies

Dissociated prosternum

Key to the South Korean Species of the Genus Dioctria Meigen

1. Postpronotal lobe (humeral callus) yellow . . . 2

- Postpronotal lobe black . . . 3

2. 1st antennal segment 2 times as long as segment 2; wings faintly spotted black medially . . . Dioctria humeralis eoa Lehr

- 1st antennal segment less than 2 times as long as segment 2; wing clearly black on basal half only . . . Dioctria vainsteini Lehr

3. Abdomen jet black, evenly covered with fine yellow hair; hind femur yellow . . . Dioctria keremza Richter

- Abdomen with pale yellow markings; hind femur with distinct, broad black band, apices yellow . . . Dioctria aestivis Esipenko

Dioctria aestivis, male

Dioctria aestivis, female

Dioctria humeralis eoa, male

Dioctria humeralis eoa, female

Dioctria keremza, male

Dioctria keremza, female

Dioctria vainsteini, male

Dioctria vainsteini, female