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
TaxonomyBrowseInfoImagesLinksBooksData
Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Mayflies (Ephemeroptera) » Pisciforma » Heptagenioidea » Flatheaded Mayflies (Heptageniidae) » Stenonema » Stenonema femoratum
Photo#78008
mayfly? - Stenonema femoratum
Copyright © 2006 Leslie Durham

mayfly? - Stenonema femoratum
Dixon, Phelps County, Missouri, USA
September 16, 2006
Size: ~1in(~2in to tip of tail)

Images of this individual: tag all
mayfly? - Stenonema femoratum mayfly? - Stenonema femoratum mayfly? - Stenonema femoratum
tag · login or register to post comments
Contributed by Leslie Durham on 18 September, 2006 - 7:22pm
Last updated 12 June, 2010 - 8:57pm

Moved
Moved from Maccaffertium.
… v belov, 12 June, 2010 - 8:57pm login or register to post comments

Maccaffertium
Leslie-

Sure is. Appears to be a Maccaffertium male imago, commonly referred to as a Cream Cahill Spinner. The family is Heptageniidae. However, the body length exclusive of tails is probably more like ~1/2", and ~1 1/2" including length of the tails.
… Roger Rohrbeck, 19 September, 2006 - 1:02am login or register to post comments

 
You're right about length
I was in the car and didn't have anything to measure him with. I let him out of the car when we stopped, so never got the chance. I was going by memory.
… Leslie Durham, 19 September, 2006 - 1:44am 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