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.

Inlet of Upper Titcomb Lake

From Titcomb Basin in Wyoming

Stream photos

Featured on the forum

Re: Trico emergers
In the Mayfly Genus Tricorythodes by Bwoklink (Martinlf replied)

Re: Trico Tips
In the Mayfly Genus Tricorythodes by Martinlf

Re: UV spectrum and trout
In General Discussion by Martinlf

Re: closing the gender gap in flyfishing
In General Discussion by Konchu (Smallflyguy replied)

Re: Fishing Kupa River, Slovenia
In Fishing Reports by Slocum (Fish1 replied)

Doroneuria baumanni (Golden Stone) Stonefly Nymph Doroneuria baumanni (Golden Stone) Stonefly Nymph

Dorsal view of a Doroneuria baumanni (Perlidae) (Golden Stone) Stonefly Nymph from Sears Creek in Washington

9 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.

Troutnut is a project started in 2003 by salmonid ecologist Jason "Troutnut" Neuswanger to help anglers and fly tyers unabashedly embrace the entomological side of the sport. Learn more about Troutnut or support the project for an enhanced experience here.

Olives

Martinlf

Moderator
Palmyra PA

Posts: 3047

Martinlf on May 1, 2009May 1st, 2009, 1:53 pm EDT

I don't have a photo, but fishing a central PA stream yesterday I encountered a hatch of size 20 olives late afternoon into early evening. Would anyone out there hazard a guess as to the species given the time of day and time of year?

"He spread them a yard and a half. 'And every one that got away is this big.'"

--Fred Chappell

Taxon

Site Editor
Plano, TX

Posts: 1311

Taxon on May 1, 2009May 1st, 2009, 3:57 pm EDT

Louis-

My guess would be Acentrella turbida (formerly classified as Pseudocloeon carolina among others), and an early-May late-afternoon/evening emerger, which would be of the size you describe.

Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com

Konchu

Site Editor
Indiana

Posts: 498

Konchu on May 2, 2009May 2nd, 2009, 5:00 am EDT

I agree. At least around here, the Acentrella have been thick this spring. The other possibility are some Plauditus spp. These also were included in Pseudocloeon at one time. The biggest visual difference between the two is the color of the abdomen: brown in Acentrella and whitish in Plauditus. The nymphs look alot a like, too: they both are two-tailed minnow-like forms, but the plauditus might have a stripe in the middle of the body and tails.

Martinlf

Moderator
Palmyra PA

Posts: 3047

Martinlf on May 3, 2009May 3rd, 2009, 5:36 pm EDT

Thank you, gentlemen.

"He spread them a yard and a half. 'And every one that got away is this big.'"

--Fred Chappell