Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
 

Register · Log In
HomeGuideID RequestRecentFrassForumsDonateHelp
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

Calendar
Upcoming Events

Photos of insects and people from the 2024 BugGuide gathering in Idaho July 24-27

Moth submissions from National Moth Week 2024

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

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


Previous events
TaxonomyBrowseInfoImagesLinksBooks
Data
Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Mayflies (Ephemeroptera) » Pisciforma » Heptagenioidea » Flatheaded Mayflies (Heptageniidae)

Family Heptageniidae - Flatheaded Mayflies


The information below is based on images submitted and identified by contributors. Range and date information may be incomplete, overinclusive, or just plain wrong.

Contributed Images Map No Images   Images
Range map for Flatheaded Mayflies
Credits: Generated with MapServer. BugGuide integration kindly provided by Mike Boone.

Hover over black occurrence boxes to see number of images submitted. Log in to make states, months and boxes clickable.
JanFebMarAprMayJunJulAugSepOctNovDec
Alabama  57212332  
Alberta   7 262    
Arizona  1 112     
Arkansas1 6   234   
British Columbia2  12186    
California 441835201429 2 
Colorado 25  2461   
Connecticut   243285   
Delaware   2        
Florida7 11 12  3 1
Georgia 169 12 21  
Idaho      1 2   
Illinois   12113171342  
Indiana 63210352    
Iowa    16231592   
Kansas  5 154 2   
Kentucky  14523     
Louisiana  351 311   
Maine 2  37251   
Manitoba      1 1   
Maryland   294554421588  
Massachusetts 329212728133   
Michigan    3573    
Minnesota    17734   
Mississippi     1      
JanFebMarAprMayJunJulAugSepOctNovDec
Missouri  13677431  
Montana 11111816  1 
Nebraska     129161  
Nevada    12      
New Brunswick    22101    
New Hampshire  1111251623   
New Jersey   17785 2  
New Mexico    31      
New York   3134315831  
North Carolina  63281018423 
North Dakota     32     
Nova Scotia     5      
Ohio    751141   
Oklahoma   217781   
Ontario3  193832171243 
Oregon   3251541532 1
Pennsylvania   1167616332633 
Quebec    271267857143  
Rhode Island       10    
Saskatchewan       3    
South Carolina 11815 12    
Tennessee  92621163420615 
Texas113745142 2 
Vermont  379861 2  
Virginia8437335345311033112
Washington   9110111231  
JanFebMarAprMayJunJulAugSepOctNovDec
West Virginia    43 4 2  
Wisconsin    123175    
Wyoming     1 1    

Disclaimer: Dedicated naturalists volunteer their time and resources here to provide this service. We strive to provide accurate information, but we are mostly just amateurs attempting to make sense of a diverse natural world. If you need expert professional advice, contact your local extension office.

Contributors own the copyright to and are solely responsible for contributed content.
Click the contributor's name for licensing and usage information.
Everything else copyright © 2003-2025 Iowa State University, unless otherwise noted.

Bugguide is hosted by:

Plant Pathology, Entomology and Microbiology at Iowa State University logo

Printer Friendly Version 		Terms of Use
Privacy Statement
Site Map
Contact