ON THE FORMATION OF DESTRUCTIVE POPULATION OF RICE WATER WEEVIL IN DOUBLE RICE CROPPING AREA OF ZHEJIANG PROVINCE,CHINA THE OOGENESIS FLIGHT SYNDROME OF RICE WATER WEEVIL, Lissorhoptrus oryzophilus Kuschel Flight behaviour in the diapause syndrome of the rice water weevail, Lissorhoptrus oryzophilus Kuschel CONSTITUTION OF THE AUTUMN POPULATION OF RICE WATER WEEVILS IN DOUBLE CROPPING RICE AREA OF ZHEJIANG PROVINCE, CHINA THE SENSITIVITY OF VARIOUS DEVELOPMENT STAGES OF MAIZE WEEVIL TO PHOSPHINE THE INFLUENCE OF IRRADIATEDWHEAT ON LONGEVITY AND REPRODUCTIONOF THE GRAIN WEEVIL Sitophilus granarius LINNE 1758 Parasitism in Acorns of Cyclobalanopsis glaucoides and Castanopsis delavayi (Fagaceae) and Its Impact on Population Regeneration A STUDY ON THE RELATIONSHIPS BETWEEN OCCURRENCE OF ARMAND PINE BARK-WEEVIL(PISSODES YUNNANENSIS LONGER) AND ENVIRONMENT