| Map | FAQ | Flyfishing Entomology |
Mayfly Distribution - San Juan Co. |
| Scientific Name | County | Location |
| Caenis youngi | San Juan | False Bay Cr |
| Callibaetis ferrugineus hageni | San Juan | False Bay Cr |
| Callibaetis ferrugineus hageni | San Juan | U Deadman Cr |
| Cinygma integrum | San Juan | Deadman Cr |
| Paraleptophlebia debilis | San Juan | Deadman Cr |
Based on: Mayflies (Ephemeroptera) of the far western United States.
Part I: Washington
by M. D. Meyer and W. P. McCafferty.
Created: 10/17/2008 Last modified: 07/26/2021 www.FlyfishingEntomology.com