In Québec, the genus Leucrocuta (family Heptageniidae) counts 3 species of insects. The stars? Hebe's flat-headed mayfly, Aphrodite's flat-headed mayfly and Minerva's flat-headed mayfly, the most often observed. The richest region: Montréal, with 3 species. Every species has its own page: photos, its season, its habitat and the best places to see it near you.