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.

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.

Caddisfly Genus Micrasema (Little Grannoms)

I have only seen two species of this small genus mentioned in angling books, and neither was said to be anything special.

Where & when

In 308 records from GBIF, adults of this genus have mostly been collected during June (31%), July (24%), May (20%), August (12%), and April (6%).

In 222 records from GBIF, this genus has been collected at elevations ranging from -30 to 8566 ft, with an average (median) of 1742 ft.

Genus Range

Start a Discussion of Micrasema

Caddisfly Genus Micrasema (Little Grannoms)

Species in Micrasema: Micrasema bactro, Micrasema rusticum
16 species (Micrasema alexanderi, Micrasema arizonicum, Micrasema bennetti, Micrasema burksi, Micrasema charonis, Micrasema dimicki, Micrasema diteris, Micrasema etra, Micrasema gelidum, Micrasema onisca, Micrasema oregona, Micrasema ozarkana, Micrasema rickeri, Micrasema scotti, Micrasema sprulesi, and Micrasema wataga) aren't included.
Genus Range
Common Name
Troutnut.com is copyright © 2004-2024 (email Jason). privacy policy