Order Ephemeroptera - Mayflies

Phylum Arthropoda - Arthropods

Class Insecta - Insects

Order Ephemeroptera - Mayflies

Family Ameletidae - Combmouthed Minnow Mayflies

Genus Ameletus

Species browni - Ameletus browni
Species tertius - Ameletus tertius
Species cryptostimulus - Ameletus cryptostimulus
Species ludens - Ameletus ludens

Family Arthropleidae - Flatheaded Mayflies

Genus Arthroplea

Species bipunctata - Arthroplea bipunctata

Family Baetidae - Small Minnow Mayflies

Genus Callibaetis

Species ferrugineus - Callibaetis ferrugineus

Subspecies hageni - Callibaetis ferrugineus hageni
Subspecies ferrugineus - Callibaetis ferrugineus ferrugineus

Genus Cloeon

Species dipterum - Cloeon dipterum

Genus Heterocloeon

Species anoka - Heterocloeon anoka

Genus Plauditus
Genus Procloeon

Family Baetiscidae - Armored Mayflies

Genus Baetisca

Species laurentina - Baetisca laurentina

Family Caenidae - Small Squaregilled Mayflies

Genus Caenis

Family Ephemerellidae - Spiny Crawler Mayflies

Genus Drunella

Species lata - Drunella lata
Species flavilinea - Drunella flavilinea
Species doddsii - Drunella doddsii

Genus Ephemerella

Species aurivillii - Ephemerella aurivillii
Species invaria - Ephemerella invaria
Species subvaria - Ephemerella subvaria

Genus Eurylophella

Species prudentalis - Eurylophella prudentalis

Genus Serratella

Species serrata - Serratella serrata

Genus Timpanoga

Species hecuba - Timpanoga hecuba

Family Ephemeridae - Common Burrower Mayflies

Genus Ephemera

Species varia - Yellow Drake
Species simulans - Ephemera simulans

Genus Hexagenia

Species limbata - Hexagenia limbata

Family Heptageniidae - Stream Mayflies

Genus Cinygmula
Genus Epeorus

Species vitreus - Epeorus vitreus
Species pleuralis - Epeorus pleuralis

Genus Heptagenia

Species flavescens - Heptagenia flavescens

Genus Leucrocuta

Species hebe - Leucrocuta hebe

Genus Maccaffertium

Species exiguum - Maccaffertium exiguum
Species modestum - Maccaffertium modestum
Species terminatum - Maccaffertium terminatum

Genus Rhithrogena

Species brunneotincta - Rhithrogena brunneotincta
Species flavianula - Rhithrogena flavianula
Species jejuna - Rhithrogena jejuna

Genus Stenacron

Species interpunctatum - Stenacron interpunctatum

Genus Stenonema

Species femoratum - Stenonema femoratum

Family Isonychiidae - Brushlegged Mayflies

Genus Isonychia

Species velma - Isonychia velma

Family Leptophlebiidae - Pronggilled Mayflies

Genus Choroterpes

Species basalis - Choroterpes basalis

Genus Habrophleboides

Species americana - Habrophleboides americana

Genus Leptophlebia

Species cupida - Early Brown Spinner
Species intermedia - Leptophlebia intermedia

Genus Paraleptophlebia

Species mollis - Paraleptophlebia mollis

Family Metretopodidae - Cleftfooteded Minnow Mayflies

Genus Siphloplecton

Species basale - Siphloplecton basale

Family Polymitarcyidae - Pale Burrower Mayflies

Genus Ephoron - White Flies

Species album - Ephoron album

Family Potamanthidae - Hacklegilled Burrower Mayflies

Genus Anthopotamus

Species neglectus - Anthopotamus neglectus
Species verticis - Anthopotamus verticis
Species distinctus - Anthopotamus distinctus

Family Siphlonuridae - Primitive Minnow Mayflies

Genus Siphlonurus

Species typicus - Siphlonurus typicus
Species quebecensis - Siphlonurus quebecensis