A remarkable caddisfly with bipectinate antennae in Cretaceous Burmese amber (Insecta, Trichoptera)

A new caddisfly (Trichoptera), Palaeopsilotreta xiai gen. et sp. nov. is described based on three well-preserved male specimens from mid-Cretaceous Burmese amber. It is assigned to the extant family Odontoceridae. Palaeopsilotreta is similar to the extant genus Psilotreta but differs from the latter by partially bipectinate antennae which are unknown among living Trichoptera. Our fossils are not only the only Mesozoic Odontoceridae, but also hitherto the earliest record of this family.