Acoustic Signals of Dendroctonus valens and Structure of Its Stridulatory Apparatus Variance in Relative Concentration of Induced Volatile Monoterpenes Composition of Pinus tabulaeformis by Dendroctonus valens Biological Characteristics and Occurring Law of Dendroctonus valens in China Changes in invasion characteristics of Dendroctonus valens after introduction into China INFECTIVITY OF ENTOMOPATHGENIC NEMATODE STEINERNEMA CERATOPHORUM TO BARK BEETLE DENDROCTONUS VALENS LARVAE Geostatistical analysis and sampling technique on spatial distribution pattern of Dendroctonus valens population STUDIES ON THE MORPHOLOGICAL CHARACTERS AND BIONOMICS OF DENDROCTONUS VALENS LECONTE Scanning Electron Microscope Observation on Antenna of Red Turpentine Beetle (Dendroctonus valens LeConte) The Volatile Components of the Chinese Pine and the EAG Responses of the Dendroctonus valens (Coleoptera:Scolytidae) Preliminary Deduction of Potential Distribution and Alternative Hosts of Invasive Pest, Dendroctonus valens (Coleoptera:Scolytidae) Research Advance on Biological Control of Conifer Bark Beetles with the Predator,Rhizophagus grandis(Coleoptera:Rhizophagidae) Progress in Study on the Fungi Associated with Dendroctonus valens Effect of Vola tiles from D endroc tonus va lens and P inus tabu laeform ison the Behav iora l Selection of Na tura l Enemy