桃小食心虫是苹果、梨、桃、枣、山楂等果树的重要害虫。近年来,随着我省苹果、梨等产量的提高,此虫发生为害也有逐年加重的趋势。据1979—1981年有关单位在重点果区调查,苹果被害率达40—50%,严重果园虫果率达70—80%;红枣被害率占30—40%;对桃树为害亦逐年严重。因此,每年由于此虫的发生为害对果品产量和质量 Peach Mung Beetle is an important pest of apple, pear, peach, jujube, hawthorn and other fruit trees. In recent years, with the increase of output of apples and pears in our province, the pest incidence has also increased year by year. According to the survey conducted by the relevant units in key fruit areas from 1979 to 1981, the rate of apprehended 40-50% of apple, severe orchard fruit and insect as 70-80%, the rate of red date as 30-40% and the pest damage as serious year by year. Therefore, the annual yield and quality of fruit are jeopardized by the occurrence of this pest