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.
Featured on the forum
This dun emerged from a mature nymph on my desk. Unfortunately its wings didn't perfectly dry out.
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.
Mayfly Genus Heterocloeon (Tiny Blue-Winged Olives)
Heterocloeon is one of two genera along with Acentrella that can be differentiated from other baetids by the presence of a conical mesonotal projection. All but one species of this genus can be further separated from Acentrella by the lack of venation in the tiny hindwings. There is little evidence that the species of Heterocloeon are of much significance to anglers.
Genus Range
Start a Discussion of Heterocloeon
Mayfly Genus Heterocloeon (Tiny Blue-Winged Olives)
Taxonomy
8 species (Heterocloeon anoki, Heterocloeon berneri, Heterocloeon berneri, Heterocloeon davidi, Heterocloeon grande, Heterocloeon petersi, Heterocloeon petersi, and Heterocloeon rubrolaterale) aren't included.