Header image
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.

Female Hydatophylax argus (Giant Cream Pattern-Wing Sedge) Caddisfly Adult Pictures

I had some trouble working through the genus key for this one because I'm not great at interpreting caddis wing emergence. Fortunately, figure 19.707 in An Introduction to the Aquatic Insects of North America (Fifth Edition) shows the distinctive color pattern of the striking forewings on Hydatophylax argus, which is a perfect match for the pattern as well as emergence. As there are no other species in that genus in this area, I can be pretty confident in the species ID.

This caddisfly was collected from the Teal River in Wisconsin on June 11th, 2021 and added to Troutnut.com by Troutnut on June 12th, 2021.

Start a Discussion of this Adult:

You must log in at the top of the page to post. If you haven't registered yet, it's this easy:


Troutnut.com is copyright © 2004-2023 (email Jason). privacy policy