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天幕毛虫(Malacosoma neustria testacea Mots.)俗称顶针虫、窝虫、毛毛虫等,是春季柞树的主要害虫。近几年在辽宁南部蚕区大发生,猖獗为害,致使大片柞蚕场柞叶被吃光,严重影响柞蚕生产。天幕毛虫一年发生一代,以卵(卵块)在枝条上越冬。在盖县4月中旬越冬卵开始孵化。幼虫历经5个龄期,1～3龄群居,结网幕。4～5龄分散取食,并有转移习性。5月下旬6
Malacosoma neustria testacea Mots. Commonly known as the thieves insects, nest worms, caterpillars, etc., is the main spring pests of oak trees. In recent years, large areas of southern silkworm area in Liaoning Province, rampant damage, resulting in large tussah oak leaves were eaten, seriously affecting tussah production. A generation of celestial caterpillars occurs a year, with eggs (egg blocks) overwintering on the branches. Overwintering eggs begin to hatch in mid-April in Gai County. Larvae after 5 age groups, 1 to 3 age groups, knot net. 4 ~ 5-year-old dispersed feeding, and transfer habits. Late May 6