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 Neoleptophlebia swannanoa
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: 5.25 mm
This is another brown and white species with all appendages white. It is a little smaller than P. mollis (now a synonym of Neoleptophlebia mollis) and emerges a little later in the season. It differs from that species in having the abdominal spiracles marked with brown dots. The penes are appressed (thus eliminating an intervening cleft), and the thin, lateral lobes at the apex are broader and more extensively up-reared, with the sharp external points wider apart (see fig. 133).
Start a Discussion of Neoleptophlebia swannanoa
References
- Jacobus, L. M., Wiersema, N.A., and Webb, J.M. 2014. Identification of Far Northern and Western North American Mayfly Larvae (Insecta: Ephemeroptera), North of Mexico; Version 2. Joint Aquatic Science meeting, Portland, OR. Unpublished workshop manual. 1-176.
- Needham, James G., Jay R. Traver, and Yin-Chi Hsu. 1935. The Biology of Mayflies. Comstock Publishing Company, Inc.
Mayfly Species Neoleptophlebia swannanoa
Species Range
Resources
- NatureServe
- Integrated Taxonomic Information System
- Global Biodiversity Information Facility
- Described by Traver (1932)