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桃蛀螟Dichocrocis Punctiferalis(Gue-ne’e)在鲁南一带与玉米螟混合发生为害高粱,高粱受害后,一般减产约30-40%,严重者颗粒不收。1963年是大发生的一年,每穗高梁有多至四、五十头者。桃蛀螟在鲁南一年发生两代。以老熟的幼虫在高粱穗或桃树皮下作茧越冬,翌年春天化蛹,五月下旬成虫羽化,六月中旬产卵于桃树枝条上,八天后孵化为幼虫为害果树果实。幼虫化蛹后,至七月下旬——八月上旬羽化为成虫,此代成虫产卵于高粱穗的枝穗及颖部(一部分成虫仍产卵在桃树上为害),每枝穗产卵一粒,幼虫孵
Dichocrocis Punctiferalis (Gue-ne’e) in the area of Lunan is mixed with corn borer to harm the sorghum. After the sorghum has been damaged, the yield will be reduced by 30-40%. 1963 was a great year, with as many as four or fifty heads of sorghum per ear. Peach moth boreal occurred in Lunan two generations a year. Old mature larvae were sorghum or peach bark cocoon wintering, pupation in spring the following spring, adult emergence in late May, in mid-June spawning peach branches, eight days after hatching larvae fruit trees. After pupation, the larva migrates into adults from late July to early August, and the adults of this generation lay their eggs in the branches and brains of sorghum spikes (some of the adults still lay eggs on peach trees), and spawn per spike One, larvae hatch