Mayfly

Mayflies have numerous veins on their forewings and small rounded hindwings. They have 2 or 3 long hairlike tails at the end of the abdomen. They can live many years as larvae in water. When they emerge as adults they only live a day or two to reproduce and don't feed. 

(Description Source: Montreal Insectarium - Espace pour la vie)

Main Photo Credit: Éphémère by André Sarrazin - Montreal Insectarium - Espace pour la vie, (n.d.). Licenced with Permission
Second Photo Credit: Mayfly by rookeac, 2022. https://inaturalist.ca/photos/201267320. Licenced with CC BY-NC 2.0, https://creativecommons.org/licenses/by-nc/2.0/