Lateral view of a Female Hexagenia limbata (Ephemeridae) (Hex) Mayfly Dun from the Namekagon River in Wisconsin

Hex Mayflies
Hexagenia limbata

The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.

A beautiful braided reach of the Sag River, with the Philip Smith Mountains in the Arctic National Wildlife Refuge (ANWR) in the background.

From the Sagavanirktok River in Alaska

Stream photos

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Limnephilus (Summer Flier Sedge) Caddisfly Larva Limnephilus (Summer Flier Sedge) Caddisfly Larva

Case view of a Limnephilus (Limnephilidae) (Summer Flier Sedge) Caddisfly Larva from the Yakima River in Washington

This seems to be a young larva of Limnephilus. Although not clear in the picture, several ventral abdominal segments have chloride epithelia.

7 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.

This Bug Has Heard All Your Jokes About Its Head Already

BoulderWork
Posts: 29

BoulderWork on Dec 9, 2015December 9th, 2015, 2:19 am EST

http://www.wired.com/2015/12/the-thing-on-this-bugs-head-is-exactly-what-you-think-it-is/

Favorite part of article:

"Dr. Peter Duelli first described this odd structure in 2004, when he observed males slowly erecting their glenofinger—but they were very shy. “When the males are undisturbed, the glenofinger can grow to almost the size of the abdomen. At the slightest disturbance (vibration, noise, shadow) it’s withdrawn.” Winterton commented, “They’re very secretive about it. You really have to set the mood for this sort of thing to happen.”

Jmd123

Oscoda, MI

Posts: 2474

Jmd123 on Dec 9, 2015December 9th, 2015, 9:29 am EST

"You really have to set the mood for this sort of thing to happen.”

I LOVE IT!!

Yep, it's a pretty wacky world when it comes to six-legged creatures!! Of course, we are talking about Australia, home of the weirdest and most dangerous of nearly every type of venomous animal (snake, spider, jellyfish, octopus, bony fish, wasp, cone shell, etc.)...

Jonathon

No matter how big the one you just caught is, there's always a bigger one out there somewhere...

Martinlf

Moderator
Palmyra PA

Posts: 3047

Martinlf on Dec 9, 2015December 9th, 2015, 12:44 pm EST

Good one, but I forsee a debate a la Fontaine's caddis coming on:

Winterton’s not sure if the glenofinger inflates with air, or fills with body fluid.

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

--Fred Chappell

PaulRoberts

Colorado

Posts: 1776

PaulRoberts on Dec 10, 2015December 10th, 2015, 5:56 am EST

Good one, but I forsee a debate a la Fontaine's caddis coming on:

Winterton’s not sure if the glenofinger inflates with air, or fills with body fluid.

Oh no!!