木毒蛾(Lymantria xylina Swinhoe)属鳞翅目毒蛾科,是福建省沿海木麻黄(Casuarinasp.)防护林的一种重要害虫。近年来在4—6月间,特别是在5月底至6月初,木麻黄林内出现大量木毒蛾幼虫自然感病死亡,经鉴定主要病原体是核多角体病毒。现将其形态,感染力测定和病毒保存等试验结果报告如下。 Lymantria xylina Swinhoe belongs to Lepidoptera, an important pest of the shelterbelts of Casuarinasp in Fujian Province. In recent years, from April to June, especially from the end of May to early June, Casuarina forest larvae appear a large number of natural disease death, the main pathogen identified is the nuclear polyhedrosis virus. Now its morphology, infectivity determination and virus preservation and other test results are reported as follows.