Key to species of Austroleucon

1. Pereopod 1 basis more than half length of all other articles together......................................... A. levis

- Pereopod 1 basis less than half length of all other articles together...............................................2

2. Antennal notch excavate, margin strongly serrate. Adults 4 mm or longer........................... A. adiazetos n. sp.

- Antennal notch oblique, margin smooth. Adult length less than 3.5 mm ............................ A. dolosolevis n. sp.