The oldest known fossil imago of Ameletopsidae (Ephemeroptera) from 99 - million-year-old Kachin amber

This dataset contains the digitized treatments in Plazi based on the original journal article Chen, Zhi-Teng, Zheng, Xuhongyi (2025): The oldest known fossil imago of Ameletopsidae (Ephemeroptera) from 99 - million-year-old Kachin amber. Acta Entomologica Musei Nationalis Pragae 65 (1): 261-268, DOI: 10.37520/aemnp.2025.020, URL: doi.org/10.37520/aemnp.2025.020 Abstract. A new fossil genus and species of the mayfly family Ameletopsidae, Paprika atsukochibae gen. & sp. nov., is described from mid-Cretaceous Kachin amber of northern Myanmar.

The specimen represents a female imago and constitutes the oldest known imaginal fossil of the family. Paprika gen. nov. exhibits a unique combination of the characters in wing venation that distinguish it from both extant and extinct Ameletopsidae. Although the new genus is assigned to Ameletopsidae based on imaginal morphological characters, it cannot be placed within the existing subfamilies due to the absence of male or caudal appendage characters.