据2004年调查,黄粉虫在我市一年发生8～10代,以卵在果台、树皮裂缝、翘皮下或枝干上越冬。翌春梨开花期卵孵化为干母,若虫于翘皮下嫩皮处刺吸汁液,羽化后繁殖,在6月下旬开始向果上转移,7月上中旬为害加重。虫先顺着果柄堆积在袋口,寻找间隙,进入袋内。入袋后先在果肩部吸食梨果 According to the 2004 survey, Tenebrio occurred in our city 8 to 10 generations a year to eggs in the fruit trees, bark cracks, under the skins or stems on the winter. The next spring pear blossom hatching as dry mother, nymphs in the skin under the skin sucking sucking juice, emergence after breeding, in late June began to transfer fruit, increased damage in mid-July. Pest along the fruit piles piled up in the pocket, looking for gaps into the bag. Into the bag after the first fruit in the pears pomegranate