大灰食蚜蝇的生物学特性观察

Study on Biological charaters of Syrphus corollae Fabricius

大灰食蚜蝇以多种蚜虫为食,是控制蚜虫发生的优势天敌种群之一。在通化县每年发生3到4代,每一世代25～30d。蛹越冬在朝阳的平地和杂草覆盖的地块。成虫羽化有2个高峰期,羽化率与土壤温度关系密切。成虫产卵量高,幼虫取食量大且种类广泛,化蛹多在肥沃而松软的土壤中。

Syrbhus corollae Fabricius lives on many species of aphides. It is a good one of many natural enemies for controlling aphid. It is an important project of plant protection that protect and make use of Syrphus corollae Fabricius.