They represent the bulk of Empidoidea diversity , and include more than two - thirds of the known species in their superfamily .
Together with the Empididae they are the most advanced members of the Empidoidea .
members represent the bulk of Empidoidea diversity , and include more than two - thirds of the known species in their superfamily .
Together with the Empididae they are the most advanced members of the Empidoidea .