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

Registration is open for the 2024 BugGuide gathering in Idaho July 24-27

Moth submissions from National Moth Week 2023

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#676701
new flier for me - Stenonema femoratum
Copyright © 2012 A.D.Levine

new flier for me - Stenonema femoratum
Southfields, Orange County, New York, USA
July 19, 2012
Size: body apx 1.5 cm
what are those very long posterior extensions

Images of this individual: tag all
new flier for me - Stenonema femoratum new flier for me closeup - Stenonema femoratum
tag · login or register to post comments
Contributed by A.D.Levine on 19 July, 2012 - 4:05pm
Last updated 19 July, 2012 - 6:53pm

Moved
Moved from Mayflies.
… Roger Rohrbeck, 19 July, 2012 - 6:53pm login or register to post comments

Stenonema femoratum
Hi A.D.Levine-

Nice photo. I believe this mayfly male imago to be of genus Stenonema, which has only one remaining N. American species, S. femoratum.

Incidentally, the white-appearing eyes likely result from their fluorescing in bright light, which is not an unusual occurrence for some members of family Heptageniidae.
… Roger Rohrbeck, 19 July, 2012 - 6:50pm login or register to post comments

Moved for expert attention
Moved from ID Request.

The tails are called cerci.
… Ken Wolgemuth, 19 July, 2012 - 5:26pm 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 © 2003-2024 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