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小蠹虫是小蠹科的一类昆虫的总称。已知有3000种,分布于全世界。我国估计有500种以上,其中已记述的有150余种。大部分小蠹虫是林木为害性最强的种类。有的可以直接酿成林木的严重损失,如云杉小蠹 Dend-roctonus engelmanni Hopkins 在1939～1953年间为害美国科罗拉多的云杉,损失高达11.25百万立方米。有的是病原菌的传播者,如欧洲榆小蠹 Scolytus multistriatus(Marsham)等,导致榆枯萎病 Ceratocystisulmi(Schwarz)Moreau 的流行,蔓延,
Bark beetle is a generic term for a group of insects in the small moth family. There are 3,000 known species distributed throughout the world. It is estimated that there are over 500 species in our country, of which more than 150 species have been described. Most bark beetles are the most virulent species of trees. Some can directly cause serious losses of forest trees, such as Dend-roctonus engelmanni Hopkins Spruce Beetle damaged spores of Colorado in the United States from 1939 to 1953 with a loss of up to 11.25 million cubic meters. Some of them are communicators of pathogenic bacteria, such as Scolytus multistriatus (Marsham et al.), Leading to the epidemic and spread of moreau of Ceratocystisulmi (Schwarz) Moreau,