Header image
Enter a name
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.

Dorsal view of a Neoleptophlebia (Leptophlebiidae) Mayfly Nymph from the Yakima River in Washington
Some characteristics from the microscope images for the tentative species id: The postero-lateral projections are found only on segment 9, not segment 8. Based on the key in Jacobus et al. (2014), it appears to key to Neoleptophlebia adoptiva or Neoleptophlebia heteronea, same as this specimen with pretty different abdominal markings. However, distinguishing between those calls for comparing the lengths of the second and third segment of the labial palp, and this one (like the other one) only seems to have two segments. So I'm stuck on them both. It's likely that the fact that they're immature nymphs stymies identification in some important way.
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.

Prodiamesa Midge Larva Pictures

Another head capsule of a chironomid showing the detail of the mouthparts.

This midge was collected from Rock Creek in Montana on December 3rd, 2005 and added to Troutnut.com by Bnewell on June 26th, 2011.

Discussions of this Larva

fossil mandibulate capsule-like structures
1 replies
Posted by Sachaman on Aug 21, 2014
Last reply on Aug 22, 2014 by Crepuscular
Hi, I'm trying to id a fossil but since my area of expertise is not about insects I'd to know if somebody can orient in my search for the affinity of the following two mandibulate capsule-like structures. I looked at several images of similar structures and I decided that they could be chironomid head capsules, but... I don't know how to upload the images. can somebody let me know, please?

Start a Discussion of Larva

References

Prodiamesa Midge Larva Pictures

Collection details
Location: Rock Creek, Montana
Date: December 3rd, 2005
Added to site: June 26th, 2011
Author: Bnewell
Troutnut.com is copyright © 2004-2024 (email Jason). privacy policy