Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

Information, insects and people from the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa


Family Heptageniidae - Flatheaded Mayflies

Phylum Arthropoda - Arthropods
Subphylum Hexapoda - Hexapods
Class Insecta - Insects
Order Ephemeroptera - Mayflies
Suborder Pisciforma
Superfamily Heptagenioidea
Family Heptageniidae - Flatheaded Mayflies

Genus Cinygma
Genus Cinygmula
Species subaequalis - Cinygmula subaequalis
Genus Ecdyonurus
Species criddlei - Little Slate-Winged Dun
Genus Epeorus
Species albertae - Epeorus albertae
Species deceptivus - Epeorus deceptivus
Species dispar - Epeorus dispar
Species dulciana - Epeorus dulciana
Species fragilis - Epeorus fragilis
Species longimanus - Epeorus longimanus
Species namatus - Epeorus namatus
Species permagnus - Epeorus permagnus
Species pleuralis - Epeorus pleuralis
Species vitreus - Epeorus vitreus
Genus Heptagenia
Species elegantula - Heptagenia elegantula
Species flavescens - Heptagenia flavescens
Species marginalis - Heptagenia marginalis
Species solitaria - Heptagenia solitaria
Genus Ironodes
Genus Leucrocuta
Species aphrodite - Leucrocuta aphrodite
Species hebe - Leucrocuta hebe
Species jewetti - Leucrocuta jewetti
Species juno - Leucrocuta juno
Species maculipennis - Leucrocuta maculipennis
Species petersi - Leucrocuta petersi
Species thetis - Leucrocuta thetis
Species walshi - Leucrocuta walshi
Genus Maccaffertium
Species exiguum - Maccaffertium exiguum
Species ithaca - Maccaffertium ithaca
Species mediopunctatum - Maccaffertium mediopunctatum
Subspecies mediopunctatum - Maccaffertium mediopunctatum mediopunctatum
Species meririvulanum - Maccaffertium meririvulanum
Species mexicanum - Maccaffertium mexicanum
Subspecies integrum - Maccaffertium mexicanum integrum
Species modestum - Maccaffertium modestum
Species pudicum - Maccaffertium pudicum
Species pulchellum - Maccaffertium pulchellum
Species smithae - Maccaffertium smithae
Species terminatum - Maccaffertium terminatum
Subspecies terminatum - Maccaffertium terminatum terminatum
Species vicarium - Maccaffertium vicarium
Genus Nixe
Species lucidipennis - Nixe lucidipennis
Species inconspicua - Nixe inconspicua
Genus Raptoheptagenia
Species cruentata - Raptoheptagenia cruentata
Genus Rhithrogena
Species brunneotincta - Rhithrogena brunneotincta
Species flavianula - Rhithrogena flavianula
Species impersonata - Rhithrogena impersonata
Genus Spinadis
Species simplex - Spinadis simplex
Genus Stenacron
Species candidum - Stenacron candidum
Species carolina - Stenacron carolina
Species floridense - Stenacron floridense
Species gildersleevei - Stenacron gildersleevei
No Taxon interpunctatum complex
Species interpunctatum - Stenacron interpunctatum
Species minnetonka - Stenacron minnetonka
Species pallidum - Stenacron pallidum
Genus Stenonema
Species femoratum - Stenonema femoratum