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Mayfly Distribution - Asotin Co. |
| Scientific Name | County | Location |
| Acentrella insignificans | Asotin | North Fork Asotin Cr |
| Ameletus vernalis | Asotin | Asotin Cr |
| Attenella margarita | Asotin | North Fork Asotin Cr |
| Baetis bicaudatus | Asotin | North Fork Asotin Cr |
| Baetis tricaudatus | Asotin | Asotin Cr |
| Baetis tricaudatus | Asotin | George Cr |
| Baetis tricaudatus | Asotin | North Fork Asotin Cr |
| Callibaetis ferrugineus hageni | Asotin | 3 mi W Asotin |
| Cinygma integrum | Asotin | Fields Spring St Prk |
| Cinygmula reticulata | Asotin | Grande Ronde R trib |
| Diphetor hageni | Asotin | Field?s Spring St Prk |
| Drunella coloradensis | Asotin | Grande Ronde R trib |
| Drunella doddsii | Asotin | Fields?s Spring St Prk |
| Drunella grandis grandis | Asotin | Asotin Cr |
| Drunella grandis grandis | Asotin | George Cr |
| Drunella grandis grandis | Asotin | South Fork Asotin Cr |
| Epeorus albertae | Asotin | Asotin Cr |
| Epeorus longimanus | Asotin | Asotin Cr |
| Epeorus longimanus | Asotin | North Fork Asotin Cr |
| Ephemerella dorothea infrequens | Asotin | Asotin Cr |
| Ephemerella dorothea infrequens | Asotin | George Cr |
| Ephemerella tibialis | Asotin | North Fork Asotin Cr |
| Heptagenia elegantula | Asotin | 4 mi S Anatone |
| Heptagenia elegantula | Asotin | Asotin Cr |
| Heptagenia elegantula | Asotin | Grande Ronde R trib |
| Ironodes californicus | Asotin | Grande Ronde R trib |
| Maccaffertium terminatum terminatum | Asotin | Snake R |
| Paraleptophlebia heteronea | Asotin | Field Springs St Prk |
| Rhithrogena hageni | Asotin | Asotin Cr |
| Rhithrogena hageni | Asotin | Grande Ronde R |
| Rhithrogena morrisoni | Asotin | Asotin Cr |
| Siphlonurus spectabilis | Asotin | Asotin Cr |
| Timpanoga hecuba hecuba | Asotin | Asotin Cr |
| Timpanoga hecuba hecuba | Asotin | North Fork Asotin Cr |
| Traverella albertana | Asotin | Snake R |
| Tricorythodes explicatus | Asotin | Snake 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