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.

Ephemerella invaria (Sulphur) Mayfly Nymph Pictures

I looked at this small Ephemerella nymph very carefully under a microscope. It as no abdominal tubercles and 1-banded tibiae. I think just a very early instar invaria nymph.

This mayfly was collected from unknown in Wisconsin on February 7th, 2004 and added to Troutnut.com by Troutnut on January 25th, 2006.

Start a Discussion of this Nymph:

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