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Blue-winged Olives
Baetis

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.

Mayfly Species Paraleptophlebia gregalis (Blue Quill)

This species produces fishable hatches, but it is not well-known in angling literature. This is due primarily to its range, which consists only of California and parts of Oregon. It is a small (by western Paraleptophlebia standards) Spring emerger that fills the niche taken by Paraleptophlebia heteronea in the rest of the West.

Where & when

Time of year : March through May; best in April and May

Nymph biology

Environmental tolerance: Tolerant of warm water

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References

Species Range
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