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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

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Species Cloeon dipterum

Mayfly - Cloeon dipterum - female Type of fly? - Cloeon dipterum Small Minnow Mayfly - Cloeon dipterum - female unknown mayfly - Cloeon dipterum Cloeon dipterum - female Ephemeroptera - Cloeon dipterum small minnow mayfly - Cloeon dipterum - female Cloeon dipterum
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Ephemeroptera (Mayflies)
Suborder Pisciforma
Family Baetidae (Small Minnow Mayflies)
Genus Cloeon
Species dipterum (Cloeon dipterum)
Synonyms and other taxonomic changes
Cloeon dipterum (Linnaeus)
Orig. Comb: Ephemera diptera Linnaeus, 1761
Syn: Cloeon cognatum Stephens 1835
Holarctic, widespread Eurasia; Canada & ne. US(1) Map(2)
May-Sep (BG data)
Life Cycle
Ovoviviparous, meaning a mated female holds her eggs internally until embryonic development is complete (about 18 days), after which she lays them in water and they hatch almost immediately: Video - Video credit: David H. Funk, Stroud Water Research Center
First recorded in the US in 1953, in Illinois; now widespread. Probably introduced.