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在浙江省义乌市,1988年首次发现梨花蕾蛆(梨花瘿蚊)为害,目前已蔓延全市梨园。受害花蕾似灯笼状逐渐干枯变黑,梨花蕾蛆在义乌1年发生1代,以蛹在0～2.0cm探的土内越冬,翌年2月下旬开始越冬蛹羽化成虫出土(气温高时羽化早,气温低时羽化迟),成虫出土后很快交尾产卵,3月中旬为幼虫孵化高峰期,幼虫孵化后为害花蕾。老熟幼虫从变黑的花蕾中爬出,沿枝干爬下或掉入地面,半小时左右即入土,至6～7月便在土中化蛹越夏越冬。梨花蕾蛆在阴湿低洼坡脚及溪边地为害较地势高燥的山地严重。主要为害砂梨,花期越早的品种
Yiwu City, Zhejiang Province, 1988 found for the first time pear bud maggot (Eupolyphaga mosquito) damage, the city has now spread pear. Occurred lantern-like lesions gradually dry dark, pear buds in Yiwu 1 year occurred in 1 generation, pupa in the 0 ~ 2.0cm exploration of the soil overwintering, the late February next year began overwintering pupa eclosion adults unearthed , Low temperature when the emergence of late), adult soon after the unearthed spawning in mid-March larvae hatch peak, larvae damage after the flower buds. Mature larvae climb out from the dark buds, climb down or fall into the ground along the branches, about half an hour or so into the soil, to 6 to 7 months in the soil pupation summer overwintering. Pear bud maggot in the wet slopes and brook slopes more damage than the terrain high dry mountain. The main damage to sand pear, the sooner the flowering varieties