Abstract: Anastoechus chinensis Paramonov is an important natural enemy of the Oriental migratory locust, Locusta migratoria manibensis (Meyen). It belongs to Bombyliiuae, Bombyliidae, Brachycera, Diptera. It is discovered and studied for the first time in the littoral locust areas in Shantong, Hebei and Tianjin. Its association with the locust egg masses amounted to about 50% ii: general and may reach over 75%.It breeds one generation per year in North China and its eggs overwinter in the locust egg masses or in the nearby soil. In the next April or May the eggs hatches into larvae which suck the egg contents to kill the eggs. It was found that this spec;.es can effectively suppress the poFulation of the first generation of the Oriental migratory locust and thus serve as a useful means in locust control. From 1982 to1987 studies were carried out on its morphology, behaviour and application in locust control. It was confirmed that it can be effectively used in the control of the Oriental migratory locust by providing sufficient food resource for the adults which consists essentially the nector from Limonium bicolor (Bunge) Kuntze and Heteropappus altaicus (Willd) Novopokr of the local flora.

Key words: AnastoechuS chinensiS Paramonov——Locusta migratotia locust control