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 |
---|---|
First and second tarsal segments near equal in length | Second tarsal segment much shorter than first |
Midline of wing pads strongly divergent from body axis | Midline of wing pads parallel |
One genus often with each coxa bearing a single, segmented, ventrally directed, finger-like gill (sf 16.20) or abdomen terminating in a large, ventral, shield-like plate (sf 16.53) | No coxal finger-like gills nor large ventral, shield-like plate |
Remaining families: Capniidae, Leuctridae, and Nemouridae | |
5 Example Specimens | 5 Example Specimens |
Taeniopterygidae | Go to Couplet 5 |