Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.
Option 1 | Option 2 |
---|---|
Mature nymph 7.8-11.4 mm long (Funk et al. 2008) | Mature nymph 6.4-8.5 mm long (Funk et al. 2008) |
Median ocellar tubercle sharp and relatively long (red box) | Median ocellar tubercle blunt to moderately sharp and relatively short |
Lateral frontoclypeal projections usually semilunar (green boxes above) | Lateral frontoclypeal projections moderately curved to straight |
Middle and hind tibiae relatively long (Funk et al. 2008) | Middle and hind tibiae relatively short (Funk et al. 2008) |
3 Example Specimens | |
Drunella cornuta | Drunella cornutella |