A PRELIMINARY STUDY ON CHEMICAL COMPOUNDS INDUCING AGGREGATION OF TOMICUS PINIPERDA L. Effect of temperature on resistance of Pinus yunnanenensis to inoculation with Leptographium yunnanense, a pathogenic fungus associated with Tomicus piniperda Studies on Predation of Thanasimus dubius(Col.: Cleridae) on Tomicus piniperda(Col.: Scolytidae) THE HISTOLOGICAL OBSERVATIONS ON INVASION OF BLUE-STAIN FUNGI (LEPTOGRAMPHIUM YUNNANENSE) ASSOCIATED WITH TOMICUS PINIPERDA ON PINUS YUNNANENSIS Influence of Temperature on the Growth of Fungus ( Leptographium yunnanense) Associated with Tomicus piniperda On Fungal Flora inside Egg Galleries of Tomicus piniperda Attacking Pinus yunnanensis A Preliminary Study on Occurrences and Pathogenicity of the Fungi Associated with