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

Spring 2021 gathering in Louisiana, April 28-May 2. Here's how to add your images.

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

Photos of insects and people from the 2012 gathering in Alabama

Mayfly - Paraleptophlebia - male

Mayfly - Paraleptophlebia - Male
Dixville, Coos County, New Hampshire, USA
September 25, 2005
Size: 7mm


Paraleptophlebia sp.
I was just identifying some today (after your visit), and looks an awful lot like a male P. moll*is, but I will stop short of stating that firmly.

Mayfly identification

Family: Polymitarchidae
Genus: Ephoron
Lifestage: imago
Sex: male

Ephoron winged stages (subimago and imago) are characterized by 2-tailed males and 3-tailed females. Only the male has a final molt to imago. Female subimago is sexually mature, and doesn't undergo a final molt.

mayfly id
Actually, this specimen is a Leptophlebiidae, probably Paraleptophlebia. It is missing the left cercus (tail). Ephoron males are much larger, do not have such clear wings, and do not have the modified dorsal portion of the eye the way this specimen has.

Thanks for the ID David. There aren't many adult mayfly pictures to compare.

Thanks for all the info about the ID Roger. There aren't many pictures of adult mayflies on the web, so it's hard to know what they are.

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