橡胶白粉病是我国橡胶树的一种重要叶部病害,严重发生时引起落叶,降低胶乳产量。此病由橡胶树粉孢Oidium heveae Steinm.引起。我们发现一种瓢虫——素鞘瓢虫Illeiscincta(Fabricius)食此真菌。为了探讨此种瓢虫在橡胶白粉病生物防治中的作用,我们对其进行了初步观察,现报道如下。 Rubber powdery mildew is an important leaf disease of rubber tree in our country, causing deciduous when serious occurs and reducing latex production. The disease is caused by Oidium heveae Steinm. We found a ladybug Illeiscincta (Fabricius) to eat this fungus. In order to explore the role of this ladybug in the control of rubber powdery mildew, we conducted a preliminary observation of it, are reported below.