Abstract: Based on several years field investigation and laboratory test on ant-lions, the life history, 4 habitat forms, insect food distribution of more than twenty species belonging to 5 orders, and the food feeding way of sitting-waiting of the natural ant-lions in northern Guangdong Province were studied.The results show that under a given range and feeding quantity, when the feeding frequency was double, the period of individual development of ant-lions could be shorten by 20%, the rate of larvae cocooning to pupae was increased by 41.75% within35 days, and the occurrence generations in one year was increased.

Key words: Ant-lions, Ecology, Individual development, neighbor competition, morphological plasticity, fine root, Schima superba, Cunninghamia lanceolata