Tribe Brachystomatini Melander 1908 (dagger fly)
Parent taxon: Brachystomatinae according to E. Wahlberg and K. A. Johanson 2018
Sister taxon: Trichopezini
Subtaxa: Brachystoma
Ecology:
Distribution: found only at Baltic amber, Konigsberg collection (Eocene of Russian Federation)