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 |
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Middle tibiae each with 2 preapical spurs (sf 19.576), i.e. spurs typically 2, 4, 4 on the tibiae of the front, middle, and hind legs, respectively | Middle tibiae each with 1 (sf 19.600) or no preapical spurs, i.e. spurs typically, 1, 2-3, 4 on the tibiae of the front, middle, and hind legs, respectively |
Remaining families: Apataniidae, Goeridae, Limnephilidae, Rossianidae, Thremmatidae, and Uenoidae | |
5 Example Specimens | |
Phryganeidae | Go to Couplet 9 |