Lateral view of a Male Baetis (Baetidae) (Blue-Winged Olive) Mayfly Dun from Mystery Creek #43 in New York

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.

Stream photos

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Coleoptera (Beetle) Insect Larva Coleoptera (Beetle) Insect Larva

Lateral view of a Coleoptera (Beetle) Insect Larva from Sears Creek in Washington

6 Recently Added Photos

27" brown trout, my largest ever. It was the sub-dominant fish in its pool. After this, I hooked the bigger one, but I couldn't land it.

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Stonefly Genus Pteronarcella (Salmonflies)

These stoneflies are similar to Pteronarcys and may be important to anglers in the West, but they are not quite as large.

Where & when

In 15 records from GBIF, adults of this genus have been collected during July (40%), June (40%), August (13%), and September (7%).

In 1 record from GBIF, this genus has been collected at elevation of 29016 ft.

Genus Range

source

Map of specific collection sites

Start a Discussion of Pteronarcella

References

Swisher, Doug and Carl Richards. 2000. Selective Trout. The Lyons Press.