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

Calendar

TaxonomyBrowseInfoImagesLinksBooksData
Photo#378733
Mayfly #2 - male

Mayfly #2 - Male
Gilbert Access, Buffalo National River, Searcy County, Arkansas, USA
March 18, 2010
Size: ~2 cm long
Lone individual alighted on canoe on gravel bar along river; placed in plastic cup for photography,

Images of this individual: tag all
Mayfly #2 - male Mayfly #2

Moved
Moved from Mayflies.

from Lloyd Gonzales:
"Roger's suggestion that this might be Stenonema femoratum seems like a pretty good one based on distribution and the tight clusters of crossveins behind the bullae of the forewings. However, a few Maccaffertium have similar venation, and I can't confirm without being able to see the distinctive tripunctate marks of femoratum on the tergites. Consequently, Heptageniidae is the best I can offer."

Heptageniidae
John-

Nice. It's a male subimago of family Heptageniidae, and I believe it to be Stenonema femoratum, but the Maccaffertium/Stenonema/Stenacron distinctions can be rather tricky, so please don't move it anywhere until Lloyd Gonzales has had an opportunity to weigh in.

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