First record of the subfamily Brenthorrhininae (Coleoptera, Nemonychidae) in Cretaceous Kachin amber.

A new tribe, Burmoptarthrini Legalov, trib. nov. from the subfamily Brenthorrhininae (Nemonychidae), with a new genus and species, Burmoptarthrus storozhenkoi Legalov, gen. et sp. nov., is described and illustrated from late Cretaceous Kachin amber. This new tribe can be distinguished from the tribes Eccoptarthrini, Brenthorrhini and Distenorrhinini by its strongly constricted head capsule behind the eyes, which protrude strongly from the head. It also has a coarsely punctate and granulated pronotum and head, as well as granulated lateral pronotal margins. A key to the tribes and a list of described species of the subfamily Brenthorrhininae are compiled.