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.
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This wild-looking little thing completely puzzled me. At first I was thinking beetle or month larva, until I got a look at the pictures on the computer screen. I made a couple of incorrect guesses before entomologist Greg Courtney pointed me in the right direction with Psychodidae. He suggested a possible genus of Thornburghiella, but could not rule out some other members of the tribe Pericomini.
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Caddisfly Species Neophylax concinnus (Autumn Mottled Sedges)
Where & when
This is a widespread species.In 34 records from GBIF, adults of this species have mostly been collected during September (35%), October (35%), August (15%), May (6%), and November (6%).
In 34 records from GBIF, this species has been collected at elevations ranging from 30 to 2260 ft, with an average (median) of 620 ft.
Species Range
Egg-Laying behavior
The known ovipositing behavior of this species does not create any opportunities for the trout. They either lay eggs on overhanging vegetation and wait for rain to wash them into the water, or land on this vegetation and drop them into the water.Start a Discussion of Neophylax concinnus
References
- LaFontaine, Gary. 1981. Caddisflies. The Lyons Press.
- Swisher, Doug and Carl Richards. 2000. Selective Trout. The Lyons Press.
Caddisfly Species Neophylax concinnus (Autumn Mottled Sedges)
Species Range
Common Name
Resources
- NatureServe
- Integrated Taxonomic Information System
- Global Biodiversity Information Facility
- Described by MacLachlan (1871)