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

Giving Tuesday, November 30. Please consider a gift to BugGuide!

BugGuide is a National Moth Week Partner. How to add your National Moth Week 2021 photos. July 17-25.

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

National Moth Week 2020 photos of insects and people.

Photos of 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

Previous events

Mayfly - Hexagenia limbata - female

Mayfly - Hexagenia limbata - Female
Beaverton, Washington County, Oregon, USA
July 24, 2010
Size: huge
Can anyone ID further? Thank you

Looks like Mayfly...
Probably Hexagenia limbata.

Too late...

Moved from ID Request.

Hexagenia limbata
Hi Eric-

It's a mayfly of family Ephemeridae, specifically a Hexagenia limbata female imago. And yes, they are quite large.

I can't believe the stuff that comes from my backyard!
By the way I took a class in aquatic inverterates...but we didn't cover the adult stages.

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