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马尾松毛虫(Dendrolimus punctatusWalker)在台湾北部是松树上一种重要的食叶害虫,在中、南部也有少量发生(Yie et al.,1966)。其最适分布海拔高度为0—500米,少数可高达1,000米。1945年后,松毛虫每年或隔几年发生一次。然而,1952年由琉球岛引进琉球松后,每年松毛虫都成灾。1954年在阳明山温顺林区松毛虫大发生,毁灭了24,659棵12年生的松树。有的年份受灾面积多达上千公顷。
Dendrolimus punctatus Walker is an important leaf-cutting pest in pine trees in northern Taiwan, with minor occurrences in the central and southern parts (Yie et al., 1966). The most suitable distribution altitude of 0-500 meters, a few can be as high as 1,000 meters. After 1945, the pine caterpillars occur once a year or every few years. However, after the introduction of Ryukyu pine by Ryukyu Island in 1952, the annual pine caterpillars were disastrous. In 1954, a large population of pine caterpillars occurred in Wenshuang Forest, Yangmingshan, killing 24,659 12-year-old pine trees. Some years affected area up to thousands of hectares.