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.
Mayfly Species Procloeon vicinum (Tiny Sulphur Duns)
Species Range
Physical description
Most physical descriptions on Troutnut are direct or slightly edited quotes from the original scientific sources describing or updating the species, although there may be errors in copying them to this website. Such descriptions aren't always definitive, because species often turn out to be more variable than the original describers observed. In some cases, only a single specimen was described! However, they are useful starting points.
Male Spinner
Wing length: 4.5? mm
Abdominal tergites 2-6 of male imago whitish hyaline.
Turbinate eyes rufous. Thorax fulvous. Legs whitish, the fore leg fulvous at the base. Wings hyaline. There are about 5 cross veins in the stigmatic area, simple and almost straight, and not quite reaching the subcosta. Abdominal segments 2-6 whitish hyaline; the apical tergites fuscous, sternites pale. Tails whitish. In the male, there is a slight inward-projecting angle at the apex of the basal forceps joint, on its inner margin.
Start a Discussion of Procloeon vicinum
References
- Needham, James G., Jay R. Traver, and Yin-Chi Hsu. 1935. The Biology of Mayflies. Comstock Publishing Company, Inc.
Mayfly Species Procloeon vicinum (Tiny Sulphur Duns)
Species Range
Common Name
Resources
- NatureServe
- Integrated Taxonomic Information System
- Global Biodiversity Information Facility
- Described by Hagen (1861)