| Map | FAQ | Flyfishing Entomology |
Mayfly Distribution - Stevens Co. |
| Scientific Name | County | Location |
| Acentrella turbida | Stevens | Big Sheep Cr |
| Acentrella turbida | Stevens | Deep Cr |
| Ametropus ammophilus | Stevens | Deep Cr |
| Attenella margarita | Stevens | Chamokane Cr |
| Attenella margarita | Stevens | Colville R |
| Attenella margarita | Stevens | Deep Cr |
| Attenella margarita | Stevens | Kettle R |
| Baetis tricaudatus | Stevens | Big Sheep Cr |
| Baetis tricaudatus | Stevens | Chamokane Cr |
| Baetis tricaudatus | Stevens | Chewelah Cr |
| Baetis tricaudatus | Stevens | Colville R |
| Baetis tricaudatus | Stevens | Deep Cr |
| Baetis tricaudatus | Stevens | Deer Cr |
| Baetis tricaudatus | Stevens | Kettle R |
| Baetis tricaudatus | Stevens | Stensgar Cr |
| Caenis amica | Stevens | Loon Lake |
| Callibaetis ferrugineus hageni | Stevens | Loon Lake |
| Caudatella jacobi | Stevens | Chewelah Cr |
| Diphetor hageni | Stevens | Colville R |
| Diphetor hageni | Stevens | Deep Cr |
| Diphetor hageni | Stevens | Deer Cr |
| Diphetor hageni | Stevens | Kettle R |
| Diphetor hageni | Stevens | Stensgar Cr |
| Drunella coloradensis | Stevens | Rush Cr |
| Drunella coloradensis | Stevens | Smackout Cr |
| Drunella coloradensis | Stevens | Stensgar Cr |
| Drunella doddsii | Stevens | Big Sheep Cr |
| Drunella doddsii | Stevens | Smackout Cr |
| Drunella flavilinea | Stevens | Chamokane Cr |
| Drunella flavilinea | Stevens | Chewelah Cr |
| Drunella flavilinea | Stevens | Springdale Cr |
| Drunella grandis ingens | Stevens | Chamokane Cr |
| Drunella grandis ingens | Stevens | Deer Cr |
| Drunella grandis ingens | Stevens | Stensgar Cr |
| Epeorus albertae | Stevens | Chamokane Cr |
| Epeorus albertae | Stevens | Colville R |
| Epeorus albertae | Stevens | Deep Cr |
| Epeorus albertae | Stevens | Deer Cr |
| Epeorus albertae | Stevens | Kettle R |
| Epeorus albertae | Stevens | Stensgar Cr |
| Epeorus deceptivus | Stevens | Deer Cr |
| Epeorus grandis | Stevens | Colville R |
| Epeorus longimanus | Stevens | Chamokane Cr |
| Epeorus longimanus | Stevens | Chewelah Cr |
| Epeorus longimanus | Stevens | Colville R |
| Epeorus longimanus | Stevens | Deer Cr |
| Epeorus longimanus | Stevens | Stensgar Cr |
| Ephemerella excrucians | Stevens | Loon Lake |
| Ephemerella tibialis | Stevens | Big Muddy Cr |
| Ephemerella tibialis | Stevens | Big Sheep Cr |
| Ephemerella tibialis | Stevens | Chamokane Cr |
| Ephemerella tibialis | Stevens | Chewelah Cr |
| Ephemerella tibialis | Stevens | Colville R |
| Ephemerella tibialis | Stevens | Deer Cr |
| Ephemerella tibialis | Stevens | Kettle R |
| Ephemerella tibialis | Stevens | Stensgar Cr |
| Ephemerella verruca | Stevens | Chamokane Cr |
| Heptagenia solitaria | Stevens | Colville R |
| Leptophlebia cupida | Stevens | Loon Lake |
| Matriella teresa | Stevens | Near Springdale |
| Paraleptophlebia bicornuta | Stevens | Chamokane Cr |
| Paraleptophlebia memorialis | Stevens | Chamokane Cr |
| Parameletus columbiae | Stevens | Chamokane Cr |
| Rhithrogena morrisoni | Stevens | Chamokane Cr |
| Tricorythodes explicatus | Stevens | Chamokane Cr |
| Tricorythodes explicatus | Stevens | Deep 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