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Upcoming Events

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

National Moth Week was July 23-31, 2022! See moth submissions.

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

Photos of insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12


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TaxonomyBrowseInfoImagesLinksBooksData

Species Cloeon dipterum

Cloeon dipterum - male Type of fly? - Cloeon dipterum orange Mayfly? - Cloeon dipterum unknown mayfly - Cloeon dipterum Cloeon dipterum - female Baetid subimago - Cloeon dipterum - female Baetid subimago - Cloeon dipterum - female small minnow mayfly - Cloeon dipterum - female
Classification
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
Range
Holarctic, widespread Eurasia; Canada & ne. US(1) Map(2)
Season
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
Remarks
First recorded in the US in 1953, in Illinois; now widespread. Probably introduced.