The genus Diolcogaster Ashmead, 1900 (Hymenoptera, Braconidae, Microgastrinae) from China is revised and keyed, with nine new species, namely Diolcogaster bifurcifossasp. n., Diolcogaster brevivenasp. n., Diolcogaster grammatasp. n., Diolcogaster ineminenssp. n., Diolcogaster laetimediasp. n., Diolcogaster pluriminitidasp. n., Diolcogaster praritassp. n., Diolcogaster punctatiscutumsp. n. and D...