Geostatiscal analysis on spatial patterns of Macrosiphum granarium and Aphidius Effects of volatiles from different trophic level on foraging behavior of Aphidius avenae STUDIES ON THE POPULATION DYNAMICS AND APHID CONTROL CAPABILITY OF APHIDIUS AVENAE THE EFFECTS OF WHEAT VARIETIES RESISTANT TO APHIDS ON THE PUPOLA TION OF SITOBIONAVENAE (FABRICIUS) AND PARASITIZATION AS WELL AS DEVELOPMENT OF ITS PARASITIC WASPAPHIDIUS AVENAE HALIDAY Impacts of Beauveria bassiana Effects of fluctuating thermal regime on cold tolerance of parasitoid wasp Aphidius gifuensis. Parasitism and offspring fitness of Aphidius ervi Haliday in relation to its host Acyrthosphon pisum Harris at different stages Rhythm of honeydew excretion by the tea aphid and its attraction to various natural enemies