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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Femora transversely banded ![]() | Femora longitudinally banded ![]() ![]() ![]() |
Male hemitergal process foot-shaped with long slender ankle and toe ![]() | Male hemitergal process either with toe blunt or ankle short ![]() ![]() |
Female subgenital plate truncate, dark pigment covers sternum 8 in continuous mesal band ![]() | Female subgenital plate rounded with areas of basolateral dark pigment ![]() ![]() |
Remaining species: Agnetina capitata and Agnetina flavescens | |
2 Example Specimens | |
Agnetina annulipes | Go to Couplet 2 |