Xyleborus sp.(Coleoptera:Scolytidae) is an invasive wood-boring beetle that attacks the Eucalyptus spp. Here,harm characteristic and spatial pattern of Xyleborus sp.were preliminary investigated in the E.maidenii's forest stand located in Chuxiong city.Adult female beetles invaded the living Eucalyptus xylem.Many accumulations of sawdust in the bark could be seen around the entrance burrow.Upon examining the xylem from the infested tree,la scotie gallery could be seen that were filled with lots of black or ...