广西发现重要桉树食叶害虫——杧果天蛾

Compsogene panopus,a new defoliator on eucalyptus in Guangxi

杧果天蛾Compsogene panopus是我国南方常见天蛾种类。近年来,在广西桉树林发现有杧果天蛾危害,并有逐渐蔓延、暴发成灾的趋势。描述了杧果天蛾各虫态的形态学特征及发育历期。该虫在广西南宁1 a发生3-4代（桂北地区发生代数较桂南地区少1代）,以蛹在土中越冬。成虫具有较强趋光性,且雄虫早于雌虫羽化,卵散产于叶片背面,幼虫共5龄,4龄开始食量增大,严重危害桉树。

Abstraet：Compsogene panopus is a common species in the South of China. In recent years, it was found attacking Eucalyptus spp. in Guangxi, China, and tended to gradually spread and outbreak. The morphological characters and developmental duration of C. panopus were described. It has 3 or 4 generations a year and overwinters as pupa under ground. The generations in the north of Guangxi is less than those in the south of Guangxi. Adults have strong phototaxis, and males emerge earlier than females. Eggs are sparsely laid on leaf back. Larvae have 5 instars, and appetite starts to increase in the fourth instar.