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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Male forceps with distinct mesal projections on segment 1 (sf 13.258 and 13.259) | Male forceps without distinct mesal projections as at left, or with a slight bulge at the position where mesal projections would occur (sf 13.264) |
Remaining genera: Baetodes and Moribaetis | Remaining genera: Americabaetis, Baetis, Cloeodes, Paracloeodes, and Plauditus |
5 Example Specimens | |
Go to Couplet 17 | Go to Couplet 18 |