Key to the genera of Athliini new tribe

1. Each claw with fleshy lobe directly underneath (Fig. 59). Chile............................... Dihymenonyx Gutiérrez

- Claws without fleshy lobes, but instead with a short, setose onychium in between................................... 2

2. Antennae with 9 antennomeres. Argentina, Brazil, Chile ........................................... Athlia Erichson

- Antennae with 8 antennomeres........................................................................... 3

3. Elytra with mottled appearance and distinctly setose; metatibial notch with upper apical spur set directly below tarsal articula- tion. Argentina (Neuquén, Río Negro), Chile....................................................... Ulata Saylor

- Elytra unicolored, glabrous; metatibial notch with apical spurs set on each side of tarsal articulation. Argentina (Buenos Aires), Uruguay............................................................. Apteroathlia Smith & Evans, new genus