The oldest known net-winged midges (Insecta: Diptera: Blephariceridae) from the late Mesozoic of northeast China

Two fossil specimens of female net-winged midges from the Daohugou biota, Inner Mongolia, China are described. One new genus and two new species are established: Brianina longitibialis gen. et sp. nov. and Megathon brodskyi sp. nov. They are the oldest known representatives of the family Blephariceridae.