Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
 
Clickable Guide
Interactive image map to choose major taxa 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

National Moth Week was July 19-27, and the Summer 2025 gathering in Louisiana, July 19-27

Photos of insects and people from the 2024 BugGuide gathering in Idaho July 24-27

Moth submissions from National Moth Week 2024

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
Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Mayflies (Ephemeroptera) » Furcatergalia » Scapphodonta » Ephemeroidea » Common Burrower Mayflies (Ephemeridae) » Hexagenia » Hexagenia rigida
Photo#1463658
Hexagenia atrocaudata ? - Hexagenia rigida - male
Copyright © 2017 Alain Hogue

Hexagenia atrocaudata ? - Hexagenia rigida - Male
Chateauguay, Quebec, Canada
June 11, 2017

Images of this individual: tag all
Hexagenia atrocaudata ? - Hexagenia rigida - male Hexagenia atrocaudata ? - Hexagenia rigida
tag · login or register to post comments
Contributed by Alain Hogue on 3 November, 2017 - 7:37pm
Last updated 21 August, 2025 - 11:55am

Moved
Moved from Hexagenia.
… Lloyd Gonzales, 21 August, 2025 - 11:55am login or register to post comments

Hexagenia rigida
Hi Alain,

This is a male Hexagenia rigida subimago. You can see the very long male member in the full resolution image, lying between the second segment of the right clasper and the base of the tails. The crown-shaped tergal markings are typical, and the hindwing with a few dark spots and a dark margin are also typical of rigida males.

Best,
Lloyd
… Lloyd Gonzales, 21 August, 2025 - 11:54am login or register to post comments

Moved
Moved from Mayflies.
… Roger Rohrbeck, 4 November, 2017 - 11:10pm login or register to post comments

Hexagenia
Hi Alain-

Based on the abdominal markings, I believe this male subimago to be either Hexagenia limbata or Hexagenia rigida, which can't be reliably differentiated from one another from a photo.
… Roger Rohrbeck, 4 November, 2017 - 11:07pm login or register to post comments

 
H. limbata or H. rigida would
H. limbata or H. rigida would be great. Both would be a first for me. Thanks Roger !
… Alain Hogue, 5 November, 2017 - 7:58am 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 © 2003-2025 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