A survey was conducted in the northern conifer forests of Korea from February to May in 2009 for the Monochamus species vectored Bursaphelenchus species. Dead pine trees infested with bark beetle larvaes were collected from Pinus densiflora and P. koraiensis located in the following target areas: Pocheon, Yeongi, Jincheon, Chuncheon, and Bonghwa. A cerambycid beetle, M. saltuarius was only found from sampled log piles in target areas. Bursaphelenchus species carried by M. saltuarius was only isolated in Pocheon, Gyeonggi province. The nematodes recovered from 17 (71%) of 24 beetles from P. koraiensis and 12 (75%) of 16 beetles from P. densiflora. The average number of nematode per adult was 1,974 and 11,823 from P. koraiensis and P. densiflora, respectively. The nematode was also recovered from the inner bark of both Pinus species infested with M. saltuarius larvae. Bursaphelenchus species identification was performed by morphological characters and molecular analysis with ITS-RFLP patterns and sequences of ITS and D2D3 region. Both morphological and molecular characters match well with the original description of the European type of B. mucronatus. This is the first report of M. saltuarius species as a vector of the European type of B. mucronatus on both P. densiflora and P. koraiensis in Korea.