Up to days, 15 species of the genus Xylotrechus, which have most diverse species among the tribe Clytini, have been recorded from Korean peninsula. The genus Xylotrechus can be distinguished from the other genera by combination of following characteristics: length of antennal socket longer than 1st segment of antenna; antennae reaches about 2/3 of elytra or less; carinae on frons well developed; 1st segment of hind tarsus 2 times longer than total length of 2nd+3rd segment; carinae on frons exceeding vertex; compound eye joined prothorax. In 2007, we collected a specimen which is belong to the genus Xylotrechus from Goyang-si, Gyeonggi province and we identified this specimen with Xylotrechus pavlovskii Plavilstshikov. Xylotrechus pavlovskii Plavilstshikov is easily distinguished from the congeneric species by following characteristics: femora black except basal half pale brown; antennal socket with yellow pubescence patch; pronotum black with distinct six yellow pubescence patches; elytra black with four pairs of yellowish linear pubescence patches except anterior 1/5 part reddish, apice blunt with inner and outer small sharpen projection. As a result of this study, we report this species for the first time from Korea with description and illustrations of diagnostic characters.

• Youngeun Han(Department of Foresty, Sangji University)
• Sangwook Park(School of Agricultural Biotechnology, Seoul National University)
• Jongok Lim(School of Agricultural Biotechnology, Seoul National University)
• Bongkyu Byun(Division of Forest Biodiversity, Korea National Arboretum)
• Seunghwan Lee(School of Agricultural Biotechnology, Seoul National University)
• Dongpyeo Lyu(Department of Foresty, Sangji University)