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

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

National Moth Week was July 23-31, 2022! See moth submissions.

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

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Previous events

Black & White Mayfly Nymph - Rhithrogena

Black & White Mayfly Nymph - Rhithrogena
Georgia, USA
April 24, 2014
Size: 1/4"
I found this in a small mountain trout stream in North Georgia. Any ideas on id? Thanks

Moved from Mayflies.

Hi Allen-

Yes, it is surely a Heptageniid, and I believe it to be of genus Rhithrogena. Although probably not the same species of Rhithrogena as yours, this one has much the same light/dark dorsal coloration pattern as yours does.

Incidentally, when you posted the image on Troutnut in early May, Luke Jacobus (the new steward of Mayfly Central) commented as follows: Beautiful. This looks to me like some freshly molted Rhithrogena that I've seen from the SE. The spots on the femora aren't as prominent as usual, but I think I can make them out.

Moved from ID Request.

pls make sure to fill in location data
neat one.

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