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.
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Keying this one out using Zloty & Pritchard 1997:
-No ganglionic markings on sternites 2–8
-Posterior margins of sternits 6–8 without numerous spines
-Mesal gill extension well developed (I really don't like the "well developed" language when it's subjective, but in this case the other option doesn't lead anywhere productive)
-Tails pale in basal 1/3
-Larger species (13–16 mm) — this one is just shy of 12 mm, but closer to 13 than to <10
-Spring emergence
This all points to Ameletus vernalis.
-No ganglionic markings on sternites 2–8
-Posterior margins of sternits 6–8 without numerous spines
-Mesal gill extension well developed (I really don't like the "well developed" language when it's subjective, but in this case the other option doesn't lead anywhere productive)
-Tails pale in basal 1/3
-Larger species (13–16 mm) — this one is just shy of 12 mm, but closer to 13 than to <10
-Spring emergence
This all points to Ameletus vernalis.
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Tipulidae (Crane Fly) True Fly Adult Pictures
Collected near the Touchet River in Dayton, WA.
This true fly was collected from the Touchet River in Washington on June 6th, 2011 and added to Troutnut.com by Bnewell on June 26th, 2011.
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Tipulidae (Crane Fly) True Fly Adult Pictures
Collection details
Location: Touchet River, Washington
Date: June 6th, 2011
Added to site: June 26th, 2011
Author: Bnewell
Date: June 6th, 2011
Added to site: June 26th, 2011
Author: Bnewell