Ips typographus populations were screened for 3 enzyme-loci, Aat-2, Amy-2 and Est-2. These three loci showed between 8 and 18 alleles. An additional electromorph was observed by a braconid parasitoid. The allozymes pattern and the mode of inheritance of the alleles were proved. Aut-2 had 8, Amy-1 had 14 and Est-2 had 18 alleles, therefore the statistical procedures were calculated for each locus individually. Two multivariatic methods proved the degree of relationship of the 9 Austrian I. typographus populations. The genetic similarity between six populations, infesting natural Pzcea d i e s stands, supports the hypothesis that they have emerged from the Dinaric Alps parallel to the host migration after the glacial period. Three populations are infesting artifical planted hosts and are suggested to have immigrated secondarly.