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

Summer 2025 gathering in Louisiana, July 19-27

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
TaxonomyBrowseInfoImagesLinksBooksData
Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Mayflies (Ephemeroptera) » Pisciforma » Heptagenioidea » Flatheaded Mayflies (Heptageniidae) » Rhithrogena » Rhithrogena impersonata
Photo#267127
Mayfly - Rhithrogena impersonata
Copyright © 2009 tom murray

Mayfly - Rhithrogena impersonata
Charlemont, Franklin County, Massachusetts, USA
April 17, 2009
Size: 6.5mm

Images of this individual: tag all
Mayfly - Rhithrogena impersonata Mayfly - Rhithrogena impersonata Mayfly - Rhithrogena impersonata
tag · login or register to post comments
Contributed by tom murray on 19 April, 2009 - 10:24am
Last updated 5 March, 2025 - 1:48pm

Moved
Moved from Rhithrogena.
… tom murray, 24 April, 2009 - 9:12pm login or register to post comments

Moved
Moved from Stream Mayflies.
… tom murray, 20 April, 2009 - 7:34am login or register to post comments

Moved
Tim, I'll put it in the family for now, and see if Don can go further with the specimen.
… tom murray, 19 April, 2009 - 4:38pm login or register to post comments

Heptageniidae
Might be Cinygmula- the gills do not seem to have fibrilliform (thread like) components and the maxillary palps (at least on the right side of the head) protude from the sides of the head.
… Tim Loh, 19 April, 2009 - 3:14pm login or register to post comments

 
Correction
I didn't notice this before but it looks like the first and last pairs of abdominal gills are expanded, which would indicate Rhithrogena.
… Tim Loh, 19 April, 2009 - 6:25pm login or register to post comments

 
more pictures added
Larger images may show the gills better.
… tom murray, 19 April, 2009 - 8:26pm login or register to post comments

 
yes
the ventral shots confirm genus. thanks!
… Tim Loh, 20 April, 2009 - 12:04am login or register to post comments

Comment viewing options
Select your preferred way to display the comments and click 'Save settings' to activate your changes.

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