红蜘蛛（ＴｅｔａｎｙｃｈｕｓｖｉｅｎｎｅｎｓｉｓＺａｃｈｅｒ）为害樟树。我们于１９９５年６月中旬～７月上旬集中时间进行了调查和防治工作。其结果表明，叶片被害率最低为４６１５％，高的达８６１２％。虫口密度为最低１１个／片，高的达２５个／片，平均为７０３个／片，造成受害叶质变厚，发黄焦枯，如火烧状，致使早期脱落。严重影响樟树的正常生长和观赏。采用２０％杀灭菊酯乳油，浓度为３０００倍液，平均防效达９８８１％以上，使樟树恢复了生机。 Red spider (TetanychusviennensisZacher) camphor trees. We conducted the investigation and prevention work in mid-June 1995 ~ early July. The results showed that the lowest damage rate of leaf was 4615% and the highest was 8612%. Insect population density of a minimum of 11 / piece, up to 25 / piece, an average of 7  03 / piece, resulting in damaged leaf thickening, yellow scorched, such as burning like, resulting in early fall off. A serious impact on the normal growth and ornamental camphor tree. The use of 20% fenvalerate EC, a concentration of 3000 times the liquid, the average control effect of 98  81% or more, so that the camphor restored vitality.