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Mayfly Distribution - Walla Walla Co. |
| Scientific Name | County | Location |
| Ameletus vernalis | Walla Walla | Walla Walla R |
| Baetis bicaudatus | Walla Walla | Touchet R |
| Baetis tricaudatus | Walla Walla | Touchet R |
| Callibaetis ferrugineus hageni | Walla Walla | Mill Cr |
| Cinygmula reticulata | Walla Walla | 5 mi SE Walla Walla |
| Diphetor hageni | Walla Walla | Touchet R |
| Drunella grandis ingens | Walla Walla | Mill Cr |
| Fallceon quilleri | Walla Walla | Touchet R |
| Rhithrogena hageni | Walla Walla | Touchet R |
| Rhithrogena robusta | Walla Walla | Mill Cr |
| Timpanoga hecuba hecuba | Walla Walla | Walla Walla R |
| Traverella albertana | Walla Walla | Walla Walla R |
| Tricorythodes explicatus | Walla Walla | Touchet R |
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