none In some forests in the surroundings of Dresden, in the Erzgebirge, the Elbsandsteingebirge and in the Hartz Mountains 13 wasp species were found as parasites or hyperparasites on Ips typographus. Roptrocerus mirus (WALK.) and Metacolus unifasciatus FORSTER are new findings for the G.D.R. Even if altitude and injurious influences correspond, there are differences between the forests regarding spectrum and abundance of the parasite species. The mortality rate in percent of the bark beetles attacked by parasites amounted between 0 and 70%, for the half of all trunks attacked by Ips typographus the mortality was less than 5%. In the months July and August the parasitic wasps can be locally of economical importance for the bark beetles by mortality rates of more than 30%. (Additional species include Roptrocerus xylophagorum, Rhopalophorus clavicornis, Coeloides bostrichorum, Dendrosotor middendorfi, Rhopalicus tutela, R. quadratus, Tomicobia seitneri, Dinotiscus eupterus, Calosota vernalis, Mesopolobus typographi, and Eurytoma arctica.)