First mayfly larva of Leptophlebiidae (Insecta: Ephemeroptera) in mid-Cretaceous Kachin amber, northern Myanmar

A new genus and species of mayfly, Kachinophlebia zhouchangfai gen. et sp. nov. (Ephemeroptera: Leptophlebiidae), is described and illustrated based on a larva in the mid-Cretaceous amber from Kachin, northern Myanmar. The new taxa are established primarily based on the morphological characters of the mouthparts, legs, abdominal gills, and caudal filaments. The new amber mayfly is the first report of Leptophlebiidae from mid-Cretaceous Kachin amber.