Insecta - Ephemeroptera - Heptageniidae

Alternative spelling: Stenonema (Maccaffertium)

Full reference: A. F. Bednarik. 1979. Subgeneric classification of Stenonema (Ephemeroptera: Heptageniidae). Journal of the Georgia Entomological Society 14:190-191

Parent taxon: Heptageniinae according to X. M. Yang et al. 2023

See also Bednarik 1979, Macadam and Ross 2016 and Wang and McCafferty 2004

Sister taxa: Heptagenia, Heptageniini, Kageroniini, Stenonematini

Subtaxa: Maccaffertium annae

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Ecology:

Distribution: found only at Mexican amber (National Museum of Scotland coll) (Miocene of Mexico)

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Specimen images are retrieved through the ePANDDA API.