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Lateral view of a Male Baetis (Baetidae) (Blue-Winged Olive) Mayfly Dun from Mystery Creek #43 in New York
Blue-winged Olives

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 Grammotaulius betteni (Limnephilidae) (Northern Caddisfly) Caddisfly Larva from the Yakima River in Washington
This is a striking caddis larva with an interesting color pattern on the head. Here are some characteristics I was able to see under the microscope, but could not easily expose for a picture:
- The prosternal horn is present.
- The mandible is clearly toothed, not formed into a uniform scraper blade.
- The seems to be only 2 major setae on the ventral edge of the hind femur.
- Chloride epithelia seem to be absent from the dorsal side of any abdominal segments.
Based on these characteristics and the ones more easily visible from the pictures, this seems to be Grammotaulius. The key's description of the case is spot-on: "Case cylindrical, made of longitudinally arranged sedge or similar leaves," as is the description of the markings on the head, "Dorsum of head light brownish yellow with numerous discrete, small, dark spots." The spot pattern on the head is a very good match to figure 19.312 of Merritt R.W., Cummins, K.W., and Berg, M.B. (2019). The species ID is based on Grammotaulius betteni being the only species of this genus known in Washington state.
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.

Bcvizina has attached these 5 pictures. The message is below.
Northern Michigan

Posts: 30
Bcvizina on Mar 15, 2010March 15th, 2010, 4:15 pm EDT
I took a couple pictures with a Canon EOS Digital Rebel because it's the only camera I could get with a semi-macro lens. I can also get my hands on a Canon EOS 7D, but I don't have any kind of macro lens for that camera. What would be a good cheap lens for taking pictures of aquatic insects?
Taxon's profile picture
Site Editor
Plano, TX

Posts: 1311
Taxon on Mar 15, 2010March 15th, 2010, 5:34 pm EDT
Very nice, Brent.

The 1st four photos appear to be of Boreal Stones (Acroneuria lycorias), which are of family Perlidae (Common Stones).

As to a "good cheap" macro lens for your EOS 7D, apart from the fact that "good" and "cheap" are probably mutually exclusive attributes, unless you venture into the used macro lens marketplace, I suspect somewhere around $350 dollars is probably pretty much entry level. However, others may be able to give you specific recommendations.
Best regards,
Roger Rohrbeck
Troutnut's profile picture
Bellevue, WA

Posts: 2758
Troutnut on Mar 15, 2010March 15th, 2010, 5:45 pm EDT
The bottom bug is a Taeniopterygid stonefly, I'm guessing Taeniopteryx but Strophopteryx would also be possible... I don't know a way to tell from these photos.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist
Taxon's profile picture
Site Editor
Plano, TX

Posts: 1311
Taxon on Mar 15, 2010March 15th, 2010, 6:15 pm EDT

Hi Jason,

Wow, my reputation for being the "fastest gun in the West" is in serious jeopardy if I slow down even a smidgen. Ready, fire, aim, as they say. However, I may be okay for a while, as the demands of matrimony are sure to take their toll. Just kidding, sort of.

Anyway, I suspect Brent's last photo to be of an Eastern Willowfly (Taeniopteryx burksi). Please see this one identified by Dr. Donald S. Chandler for comparison purposes.
Best regards,
Roger Rohrbeck
Wiflyfisher's profile picture

Posts: 622
Wiflyfisher on Mar 16, 2010March 16th, 2010, 9:28 am EDT
I have a Canon EOS Digital Rebel XTi and I love the camera. For macro work I am thinking of buying this macro lens this year...


Canon has a better one in a 60 mm but it is almost 200 bucks more, which is more than I want to spend. Especially since I mainly use my macro photos for the web and I don't need 300 dpi print type photos.

However, I may be okay for a while, as the demands of matrimony are sure to take their toll. Just kidding, sort of.

Roger, I found if you let your better-half have her own passionate past-time hobbies, it helps eliminate cramping your style. Although, kids, wife, pets, college tuition, taxes, honey-do projects, etc... do take their toll. :)

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