Abstract: This paper gives a review on the behavior of airborne insects in their migratory process and its ecological significance. Airborne insects are not simply passive drivers in the air,but can actively select their driving routes in some extents. They usually form a dense layer at the bights with higher temprature, stronger wind speed and better wind direction, and orient to a special azimuth to modify their displacements. Therefore, it seems that they have the ability to make the best use of kinetic energy of atmosphere to seek and find new habitats. Moreover, they are frequently concentrated by various scales of horizontal atmospheric convergence, which can accumulated the airborne migrants to an outbreak-density. But,whether or not the concentrated insects can form a outbreak population on crops will depend on the frequency,strength and lifetime of atmospheric convegence,the mechanism of landing(whether,when and where) and the re-emigration. Understanding the behavior of airborne insects in their migratory process is essensial for forecasting and controlling these insect pests.

Key words: Radar entomology, Migratory process, Migrating behavior