A new species of mayfly, Maccaffertium annae sp. nov. (Ephemeroptera: Heptageniidae) from Mexican amber (Miocene)

Abstract

Maccaffertium annae sp. n. is described in the Mexican amber of early Miocene age. It constitutes the first species of mayfly (Ephemeroptera), the first record of the family Heptageniidae to be described from this amber, and also the first fossil record of the genus Maccaffertium. Thespecies is represented by male and female imagos in one piece of amber.