Key to males of Erebomyia Runyon & Hurley

1. Right wing excavate posterior to apex; left wing smoothly convex posterior to apex (Fig. 1) ...................................... ........................................................................................................................................ exalloptera Runyon & Hurley

- Right and left wings mirror images ............................................................................................................................. 2

2. Wing broadly acuminate at apex (Fig. 3) ................................................................ akidoptera Hurley & Runyon n.sp.

- Wing broadly rounded or rather truncate at apex, not pointed ..................................................................................... 3

3. Wing apex excavate between R4+5 and M1, with distinct broad lobe anterior and posterior to apex (Fig. 4) ................. .............................................................................................................................. aetheoptera Hurley & Runyon n.sp.

- Wing broadly rounded at tip; costa with long clumped hairs between R4+5 and M1 (Fig. 5) .......................................... .............................................................................................................................. ramseyensis Hurley & Runyon n.sp.