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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Has a row of long, hairlike setae along the margin of the clypeus | Lacks a row of long, hairlike setae on the clypeus |
More robust, less flattened general appearance | Usually a very flattened general appearance |
Almost always has a pair of prominent, paired, stout, suboccipital spines | Sometimes has only small bumps, other times more prominent suboccipital spines |
Drunella tuberculata | Drunella walkeri |