Header image
Enter a name
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.

Dorsal view of a Limnephilidae (Giant Sedges) Caddisfly Larva from the Yakima River in Washington
This specimen resembled several others of around the same size and perhaps the same species, which were pretty common in my February sample from the upper Yakima. Unfortunately, I misplaced the specimen before I could get it under a microscope for a definitive ID.
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.

Creno has attached these 2 pictures. The message is below.
Creno
Grants Pass, OR

Posts: 302
Creno on Aug 1, 2012August 1st, 2012, 7:33 pm EDT
Here are a couple pics of a caddis pharate adult separated, but within, the pupal skin. The pupae was removed from the closed pupal case. In the photo of the abdomen you can see the wing pad and it is not completely darkened so this "pupae" was not quite ready to leave the case yet.
PaulRoberts
PaulRoberts's profile picture
Colorado

Posts: 1776
PaulRoberts on Aug 2, 2012August 2nd, 2012, 6:30 am EDT
Thanks for posting these.
Martinlf
Martinlf's profile picture
Moderator
Palmyra PA

Posts: 3047
Martinlf on Aug 2, 2012August 2nd, 2012, 7:31 am EDT
Cool. This somewhat confirms the ideas behind the LaFontaine caddis and similar halo patterns.
"He spread them a yard and a half. 'And every one that got away is this big.'"

--Fred Chappell
PaulRoberts
PaulRoberts's profile picture
Colorado

Posts: 1776
PaulRoberts on Aug 2, 2012August 2nd, 2012, 8:35 am EDT
Cool. This somewhat confirms the ideas behind the LaFontaine caddis and similar halo patterns.

I'm not convinced of that -yet.
Martinlf
Martinlf's profile picture
Moderator
Palmyra PA

Posts: 3047
Martinlf on Aug 2, 2012August 2nd, 2012, 9:16 am EDT
somewhat? :)
"He spread them a yard and a half. 'And every one that got away is this big.'"

--Fred Chappell
Entoman
Entoman's profile picture
Northern CA & ID

Posts: 2604
Entoman on Aug 2, 2012August 2nd, 2012, 11:04 am EDT
I think the difference may be just semantics. When LaFontaine discusses the "bubble" look, he is clearly referring to the reflective or translucent character of the separated cuticle. Use of the word does open up the possibility for misinterpretation as a gas bubble encased in water pressure is undoubtedly more reflective than either gas or molting fluid encased in a cuticle. If memory serves, these subtleties are not addressed in his writings, and it certainly doesn't help by attaching adjectives like "bright" and "shiny", either.:) What is undeniable is that there is a big difference between the look of a diving egg layer and an ascending pupa in terms of brightness. Personally, I wouldn't describe a pupa as looking like a bright or shiny bubble.
"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
PaulRoberts
PaulRoberts's profile picture
Colorado

Posts: 1776
PaulRoberts on Aug 4, 2012August 4th, 2012, 7:14 am EDT
If you look at pharate pupae (look at all the images you can find) you'll see that the largest amount of excess skin is around the abdomen, and at at the very tip is a bag of skin. If a gas was forced into this skin, wouldn't the insect buoy up abdomen first? There is comparatively little loose skin up front. And the abdomen, where the rete (gills in larvae/spiracules in adults) is located, would seem to be the most likely place for gas production.
PaulRoberts
PaulRoberts's profile picture
Colorado

Posts: 1776
PaulRoberts on Aug 5, 2012August 5th, 2012, 7:47 am EDT
Gills appear to be intact -Not dessicated.

Quick Reply

Related Discussions

Topic
Replies
Last Reply
3
Dec 22, 2007
by Creno
3
May 16, 2010
by Creno
3
May 18, 2020
by Wbranch
Troutnut.com is copyright © 2004-2024 (email Jason). privacy policy