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Mayfly Distribution - Snohomish Co.

Scientific NameCountyLocation
Acentrella insignificansSnohomishCanyon Cr
Acentrella insignificansSnohomishCatherine Cr
Acentrella insignificansSnohomishGrant Cr
Acentrella insignificansSnohomishJim Cr
Acentrella insignificansSnohomishLong Cr
Acentrella insignificansSnohomishPilchuck Cr
Acentrella insignificansSnohomishSouth Fork Stillaguamish R
Acentrella turbidaSnohomishCanyon Cr
Acentrella turbidaSnohomishDan Cr
Acentrella turbidaSnohomishDeer Cr
Acentrella turbidaSnohomishJim Cr
Acentrella turbidaSnohomishNorth Fork Stillaguamish R
Acentrella turbidaSnohomishPilchuck Cr
Acentrella turbidaSnohomishSouth Fork Stillaguamish R
Acentrella turbidaSnohomishWoods Cr
Attenella delantalaSnohomishDeer Cr
Attenella delantalaSnohomishNorth Fork Stillaguamish R
Attenella delantalaSnohomishWoods Cr
Attenella margaritaSnohomishDeer Cr
Attenella margaritaSnohomishGrant Cr
Attenella margaritaSnohomishJim Cr
Attenella margaritaSnohomishJim Cr
Attenella margaritaSnohomishLong Cr
Attenella margaritaSnohomishSouth Fork Stillaguamish R
Baetis bicaudatusSnohomishBlack Cr
Baetis bicaudatusSnohomishDan Cr
Baetis bicaudatusSnohomishGrant Cr
Baetis bicaudatusSnohomishLong Cr
Baetis bicaudatusSnohomishNorth Fork Sauk R
Baetis bicaudatusSnohomishOwl Cr
Baetis bicaudatusSnohomishPortage Cr
Baetis flavistrigaSnohomishDeer Cr
Baetis tricaudatusSnohomishArmstrong Cr
Baetis tricaudatusSnohomishCanyon Cr
Baetis tricaudatusSnohomishCatherine Cr
Baetis tricaudatusSnohomishCultus Cr
Baetis tricaudatusSnohomishDeer Cr
Baetis tricaudatusSnohomishEdgecomb Cr
Baetis tricaudatusSnohomishGrant Cr
Baetis tricaudatusSnohomishJim Cr
Baetis tricaudatusSnohomishJim Cr
Baetis tricaudatusSnohomishLittle Pilchuck Cr
Baetis tricaudatusSnohomishLong Cr
Baetis tricaudatusSnohomishMiddle Fork Quilceda Creek
Baetis tricaudatusSnohomishMunson Cr,
Baetis tricaudatusSnohomishNorth Fork Sauk R
Baetis tricaudatusSnohomishNorth Fork Stillaguamish R
Baetis tricaudatusSnohomishOwl Cr
Baetis tricaudatusSnohomishPilchuck Cr
Baetis tricaudatusSnohomishPortage Cr
Baetis tricaudatusSnohomishPortage Cr
Baetis tricaudatusSnohomishQuilceda Cr
Baetis tricaudatusSnohomishSouth Fork Sauk R
Baetis tricaudatusSnohomishSouth Fork Stillaguamish R
Baetis tricaudatusSnohomishWoods Cr
Caudatella hystrixSnohomishDowney Cr
Caudatella hystrixSnohomishUpper Clear Cr
Caudatella hystrixSnohomishWoods Cr
Diphetor hageniSnohomishArmstrong Cr
Diphetor hageniSnohomishCatherine Cr
Diphetor hageniSnohomishDan Cr
Diphetor hageniSnohomishEdgecomb Cr
Diphetor hageniSnohomishJim Cr
Diphetor hageniSnohomishLake Clear Cr
Diphetor hageniSnohomishLittle Pilchuck Cr
Diphetor hageniSnohomishMiddle Fork Quilceda Cr
Diphetor hageniSnohomishNorth Fork Stillaguamish R
Diphetor hageniSnohomishPeek-A-Boo Cr
Diphetor hageniSnohomishPortage Cr
Diphetor hageniSnohomishSouth Fork Stillaguamish R
Diphetor hageniSnohomishWoods Cr
Drunella coloradensisSnohomishBoulder Cr
Drunella coloradensisSnohomishBuck Cr
Drunella coloradensisSnohomishCircle Cr
Drunella coloradensisSnohomishDowney Cr
Drunella coloradensisSnohomishNorth Fork Stillaguamish R
Drunella doddsiiSnohomishBlack Cr
Drunella doddsiiSnohomishBoulder Cr
Drunella doddsiiSnohomishBuck Cr
Drunella doddsiiSnohomishCanyon Cr
Drunella doddsiiSnohomishCircle Cr
Drunella doddsiiSnohomishDeer Cr
Drunella doddsiiSnohomishJim Cr
Drunella doddsiiSnohomishLong Cr
Drunella doddsiiSnohomishMiddle Fork Quilceda Cr
Drunella doddsiiSnohomishNorth Fork Sauk R
Drunella doddsiiSnohomishNorth Fork Stillaguamish R
Drunella doddsiiSnohomishUpper Clear Cr
Drunella doddsiiSnohomishWoods Cr
Drunella grandis flavitinctaSnohomishNorth Fork Sauk R
Drunella grandis flavitinctaSnohomishSkykomish R
Drunella spiniferaSnohomishBlack Cr
Drunella spiniferaSnohomishDan Cr
Drunella spiniferaSnohomishJim Cr
Drunella spiniferaSnohomishNorth Fork Sauk R
Drunella spiniferaSnohomishOwl Cr
Drunella spiniferaSnohomishSouth Fork Sauk R
Drunella spiniferaSnohomishWoods Cr
Ecdyonurus criddleiSnohomishGrant Cr
Epeorus albertaeSnohomishGrant Cr
Epeorus deceptivusSnohomishBuck Cr
Epeorus deceptivusSnohomishDowney Cr
Epeorus deceptivusSnohomishLime Cr
Epeorus deceptivusSnohomishLong Cr
Epeorus grandisSnohomishCanyon Cr
Epeorus grandisSnohomishClear Cr
Epeorus grandisSnohomishDan Cr
Epeorus grandisSnohomishJim Cr
Epeorus grandisSnohomishLime Cr
Epeorus grandisSnohomishNorth Fork Sauk R
Epeorus grandisSnohomishWoods Cr
Epeorus longimanusSnohomishBuck Cr
Epeorus longimanusSnohomishCanyon Cr
Epeorus longimanusSnohomishDeer Cr
Epeorus longimanusSnohomishDowney Cr
Epeorus longimanusSnohomishGrant Cr
Epeorus longimanusSnohomishJim Cr
Epeorus longimanusSnohomishNorth Fork Stillaguamish R
Epeorus longimanusSnohomishPeek-A-Boo Cr
Epeorus longimanusSnohomishWallace R
Ephemerella tibialisSnohomishArmstrong Cr
Ephemerella tibialisSnohomishBoulder Cr
Ephemerella tibialisSnohomishCanyon Cr
Ephemerella tibialisSnohomishCircle Cr
Ephemerella tibialisSnohomishDan Cr
Ephemerella tibialisSnohomishDeer Cr
Ephemerella tibialisSnohomishJim Cr
Ephemerella tibialisSnohomishLittle Pilchuck Cr
Ephemerella tibialisSnohomishLong Cr
Ephemerella tibialisSnohomishNorth Fork Sauk R
Ephemerella tibialisSnohomishNorth Fork Stillaguamish R
Ephemerella tibialisSnohomishPortage Cr
Ephemerella tibialisSnohomishSouth Fork Stillaguamish R
Ephemerella tibialisSnohomishSquire Cr
Ephemerella tibialisSnohomishUpper Clear Cr
Ephemerella tibialisSnohomishWoods Cr
Ironodes nitidusSnohomishJim Cr
Matriella teresaSnohomishLong Cr
Paraleptophlebia bicornutaSnohomishCatherine Cr
Paraleptophlebia bicornutaSnohomishDeer Cr
Paraleptophlebia bicornutaSnohomishLittle Pilchuck Cr
Paraleptophlebia bicornutaSnohomishWoods Cr
Paraleptophlebia debilisSnohomishGrant Cr
Paraleptophlebia debilisSnohomishJim Cr
Paraleptophlebia debilisSnohomishLong Cr
Paraleptophlebia debilisSnohomishPortage Cr
Paraleptophlebia heteroneaSnohomishDeer Cr
Paraleptophlebia heteroneaSnohomishJim Cr
Paraleptophlebia heteroneaSnohomishLong Cr
Paraleptophlebia heteroneaSnohomishPortage Cr
Paraleptophlebia memorialisSnohomishJim Cr
Paraleptophlebia memorialisSnohomishLong Cr
Paraleptophlebia temporalisSnohomishJim Cr
Paraleptophlebia temporalisSnohomishWoods Cr
Rhithrogena hageniSnohomishWallace R
Rhithrogena morrisoniSnohomishSkykomish R
Rhithrogena robustaSnohomishDan Cr
Rhithrogena robustaSnohomishDeer Cr
Rhithrogena robustaSnohomishLong Cr
Timpanoga hecuba pacificaSnohomishCanyon Cr
Timpanoga hecuba pacificaSnohomishDeer Cr
Timpanoga hecuba pacificaSnohomishJim Cr
Timpanoga hecuba pacificaSnohomishNorth Fork Stillguamish R
Timpanoga hecuba pacificaSnohomishWoods 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: 11/03/2014    www.FlyfishingEntomology.com