小字大蚕蛾(Cricula trifenestrataHeifer)属麟翅目大蚕蛾科,是行道树阴香的主要害虫。一九六五年首次在凭祥市友谊关发生为害,以后逐渐向市区发展。该虫繁殖力强,危害严重,常给城镇绿化成果造成很大损失。为了摸清小字大蚕蛾的发生规律,探讨有效的防治措施,在凭祥市林业局和绿化队的大力支持下,我们自1980年以 Small characters Silkworm moth (Cricula trifenestrataHeifer) is a large moth family Lupechidae, is the main pests of road tree shade. In 1965 for the first time in Pingxiang City Friendship offenses occurred, and later gradually to urban development. The insect propagation strong, serious harm, often resulting in a great loss of urban greening results. In order to understand the law of the occurrence of small silkworm moth, to explore effective prevention and control measures, with the strong support of Pingxiang Forestry Bureau and the Green Team, we from 1980 to