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.

Sunlight perfectly strikes the trees at a bend in the Foss River in the Washington Cascades.

From the Foss River in Washington

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

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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.

Caddis larvae and large adult fly

CenCaAngler has attached these 2 pictures to aid in identification. The message is below.

Some sort of Caddis larva? Any help would
Be appreciated.

CenCaAngler
Fresno, CA, USA

Posts: 3

CenCaAngler on Jul 24, 2015July 24th, 2015, 7:31 am EDT

What kind of caddis adults /larvae are these?

Millcreek
Healdsburg, CA

Posts: 344

Millcreek on Jul 24, 2015July 24th, 2015, 9:43 am EDT

Johnny -

I don't have any idea what your adult caddis is but the larvae look like they could be early instar Dicosmoecus gilvipes. Here are some photos.

http://aquaticinsectsofcentralvirginia.blogspot.com/2014/05/fooled-by-case-theyre-immature-october.html

http://joycegross.com/images.php?img=2222_1710

Mark

"If we knew what it was we were doing, it would not be called research, would it?"
-Albert Einstein

Creno
Grants Pass, OR

Posts: 302

Creno on Jul 24, 2015July 24th, 2015, 3:46 pm EDT

Where were these collected - the larvae also look like some of the eastern Pycnopsyche species. Also how large are the larvae? The adult is not a caddis, the antennae are too short for something that size. It is one of the megalotera.

CenCaAngler
Fresno, CA, USA

Posts: 3

CenCaAngler on Jul 25, 2015July 25th, 2015, 1:17 am EDT

The larvae (approx. 1"-2" with dark brown/black heads and what appeared to be lighter, cream-colored abdomens) were collected from submerged boulders along the banks of the river as well as on rocks positioned between the seams of faster and slower moving water. Any more input or helpful advice and information would be/is greatly appreciated.

Creno
Grants Pass, OR

Posts: 302

Creno on Jul 25, 2015July 25th, 2015, 11:09 am EDT

Sorry, poorly worded question on my part. What Country/State/Province were these collected in? If I presume CA from your response on the Megaloptera The middle larvae doesn't look as burly as the other two so if may be a species of Psychoglypha.

Taxon

Site Editor
Plano, TX

Posts: 1311

Taxon on Jul 25, 2015July 25th, 2015, 5:52 pm EDT

Dave-

The adult is not a caddis, the antennae are too short for something that size. It is one of the megalotera.

I believe it to be the Giant Lacewing, Polystoechotes punctata.

Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com

CenCaAngler
Fresno, CA, USA

Posts: 3

CenCaAngler on Jul 26, 2015July 26th, 2015, 12:02 am EDT

The larvae were collect on the Middle Fork of the Kings River in central California, specifically in kings Canyon national park.

Entoman

Northern CA & ID

Posts: 2604

Entoman on Aug 2, 2015August 2nd, 2015, 10:43 am EDT

Great job on the ID, Roger. The lack of mandibles precluded the fishflies and I wasn't figuring lacewings over its size.

"It's not that I find fishing so important, it's just that I find all other endeavors of Man equally unimportant... And not nearly as much fun!" Robert Traver, Anatomy of a Fisherman