The attraction of castor leaves to Holotrichia oblita (Fadermann) was evaluated in olfactometer, electroantennography and field cage tests.

• 摘要利用嗅觉仪、触角电位仪、田间笼罩试验等方法测定了蓖麻叶对华北大黑鳃金龟的引诱作用。