Dryxini, Zatwarnicki

Dawah, Hassan A., Ahmad, Syed K., Abdullah, Mohammed A. & Zatwarnicki, Tadeusz, 2019, An overview of the Ephydridae (Diptera) of Saudi Arabia, Zootaxa 4711 (3), pp. 401-445 : 411

Key to genera and species of Dryxini from the Saudi Arabia

1. Notopleuron bearing a single large seta; presutural supra-alar seta lacking; mid- and hind femora moderately long to very long, length subequal to that of abdomen............................................ Corythophora longipes Loew, 1862

- Notopleuron bearing 2 setae; presutural supra-alar seta usually present; mid- and hind femora normally developed, length much shorter than that of abdomen............................................................................2.

2. Katepisternal seta absent or very weakly developed..................................... Oedenops isis Becker, 1862

- Katepisternal seta present, usually well developed ( Paralimna Loew )............................................3.

3. Body generally dark colored, dark brown to grayish brown; eye distinctly higher than wide; gena short, usually slightly less than length of basal flagellomere (subgenus Phaiosterna Cresson )...... Paralimna (Phaiosterna) bicolor ( Macquart, 1851)

- Body coloration contrastingly bicolored, silvery white to gray and dark brown; eye round, about as wide as high; gena high, height usually greater than length of basal flagellomere...................................subgenus Paralimna Loew