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 |
---|---|
Second (middle) tarsal segment about as long as first (basal) segment (sf 16.178) | Second tarsal segment much shorter than first (sf 16.176) |
Gill scar present (sf 16.179) or absent on inner coxal surface | Gill scar absent from inner coxal surface |
Remaining families: Capniidae, Leuctridae, and Nemouridae | |
5 Example Specimens | 5 Example Specimens |
Taeniopterygidae | Go to Couplet 3 |