Chibougamau, Nord-du-Québec County, Quebec, Canada September 1, 2010 Size: roughly 8 mm
I'm sorry for this badly shaped specimen, but so far, it has all the odds of expanding Bugguide a fair bit. This mayfly seems to belong to family Oligoneuriidae, a family characterized by the strongly reduced venation of the wings. Two genera are found across the Nearctic according to the revision of the genus made by Pescador and Peters in 1980, for a total of 8 species: 5 in genus Homoeoneuria Eaton, 1881 and 3 in Lachlania Hagen, 1868.
This specimen lacks many body parts, but might well belong to Homoeoneuria, based on the metathoracic trochanter forming a roughly 90 degrees angle with the metathoracic coxae. Given the current state of knowledge, and the colour patterns on the tergae, this might well be Homoeoneuria (Homoeoneuria) ammophila (Spieth).
Contributed by Yann Gobeil on 25 May, 2011 - 10:15am Last updated 25 September, 2011 - 3:53pm
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.