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Mayfly Distribution - Grays Harbor Co. |
| Scientific Name | County | Location |
| Acentrella insignificans | Grays Harbor | (unnamed location) |
| Acentrella turbida | Grays Harbor | East Fork Humptulips R |
| Acentrella turbida | Grays Harbor | Porter Cr |
| Attenella delantala | Grays Harbor | Salmon R |
| Attenella margarita | Grays Harbor | Humptulips R |
| Attenella margarita | Grays Harbor | Humptulips R |
| Baetis tricaudatus | Grays Harbor | Appletree Cr |
| Baetis tricaudatus | Grays Harbor | Cook Cr |
| Baetis tricaudatus | Grays Harbor | East Fork Humptulips R |
| Baetis tricaudatus | Grays Harbor | Porter Cr |
| Cinygmula uniformis | Grays Harbor | East Fork Humptulips R trib |
| Diphetor hageni | Grays Harbor | Appletree Cr |
| Diphetor hageni | Grays Harbor | Cook Cr |
| Diphetor hageni | Grays Harbor | Porter Cr |
| Drunella doddsii | Grays Harbor | Appletree Cr |
| Drunella doddsii | Grays Harbor | Boulder Cr |
| Drunella doddsii | Grays Harbor | East Fork Humptulips R |
| Drunella doddsii | Grays Harbor | Porter Cr |
| Drunella doddsii | Grays Harbor | Salmon R |
| Drunella doddsii | Grays Harbor | West Fork Hoquiam R |
| Drunella spinifera | Grays Harbor | Boulder Cr |
| Ecdyonurus criddlei | Grays Harbor | East Fork Humptulips R |
| Ecdyonurus criddlei | Grays Harbor | Humptulips R |
| Ecdyonurus criddlei | Grays Harbor | West Fork Humptulips R |
| Epeorus grandis | Grays Harbor | Appletree Cr |
| Epeorus grandis | Grays Harbor | Cook Cr |
| Epeorus grandis | Grays Harbor | Porter Cr |
| Epeorus longimanus | Grays Harbor | Appletree Cr |
| Epeorus longimanus | Grays Harbor | Porter Cr |
| Epeorus longimanus | Grays Harbor | Salmon R |
| Ephemerella aurivillii | Grays Harbor | West Fork Porter Cr |
| Ephemerella tibialis | Grays Harbor | Donkey Cr |
| Ephemerella tibialis | Grays Harbor | East Fork Humptulips R |
| Ephemerella tibialis | Grays Harbor | Humptulips R |
| Ephemerella tibialis | Grays Harbor | McCalla Cr |
| Ephemerella tibialis | Grays Harbor | Porter Cr |
| Ephemerella tibialis | Grays Harbor | Raft River |
| Ephemerella tibialis | Grays Harbor | Salmon R |
| Ephemerella tibialis | Grays Harbor | West Fork Humptulips R |
| Ironodes californicus | Grays Harbor | Cedar Cr |
| Paraleptophlebia bicornuta | Grays Harbor | Stevens Cr |
| Paraleptophlebia placeri | Grays Harbor | Raft R |
| Paraleptophlebia temporalis | Grays Harbor | Appletree Cr |
| Paraleptophlebia temporalis | Grays Harbor | Cook Cr |
| Rhithrogena hageni | Grays Harbor | West Fork Hoquiam R |
| Rhithrogena robusta | Grays Harbor | Appletree Cr |
| Siphlonurus autumnalis | Grays Harbor | East Fork Humptulips R |
| Timpanoga hecuba pacifica | Grays Harbor | Humptulips R |
| Timpanoga hecuba pacifica | Grays Harbor | Salmon R |
| Tricorythodes explicatus | Grays Harbor | Montasano |
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