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Species Cloeon dipterum

Small Minnow Mayfly - Cloeon dipterum - male

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.

Works Cited

1.	Mayfly Central

2.	Rohrbeck R. (2004-2014) Flyfishing entomology

Contributed by John R. Maxwell on 26 July, 2008 - 7:12am
Additional contributions by Beatriz Moisset, Mike Quinn, Aaron Schusteff, v belov
Last updated 9 July, 2017 - 3:41pm

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