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The article discusses the proposed conservation of the usage of the generic name Ecdyonurus Eaton and the specific name Ecdyonurus venosus with the designation of a neotype for the latter. It states that the universal adoption of the name Ecdyonurus venosus, a type species of the mayfly genus Ecdyonurus Eaton, by scientific authors began with the redescription of the name in 1942 by D. E. Kimmins. It notes that application of Article 70.3.2 of the International Code of Zoological Nomenclature is unlikely to resolve the issue concerning the species-group name Ephemera venosa Fabricius. The International Commission on Zoological Nomenclature is asked to exhibit its plenary power to set aside all previous type fixations for Ephemera venosa Fabricius.

The article focuses on the ruling of the International Commission on Zoological Nomenclature which declines a request to conserve the generic name Ecdyonurus Eaton, 1868 and the specific name Ecdyonurus venosus Fabricius, 1775 (Ecdyonurus venosus; Insecta, Ephemeroptera) by designation of a neotype for Ephemera venosa. It says that the Commission has approved the application which will conserve the prevailing use of the generic name.