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二点委夜蛾属鳞翅目夜蛾科,委夜蛾属,是夏玉米生产上新发现的、突发强的重要害虫之一。2009年首次在我县发现,2010年发生面积、为害程度有加重趋势。该害虫在田间的为害症状,一般以幼虫为害玉米幼苗,轻者造成玉米苗期植株倾斜、倒伏,较重的引起植株枯心死亡出现玉米缺苗断垄现象,严重者使玉米田间出现大面积无苗空地,甚至需要毁地重种。1害虫形态特征二点委夜蛾成虫体长10~12mm,翅展20mm。主要识别特征是:前翅灰褐色至深褐色,在中室中部和端部各有1个小黑点,端部黑点有时不明显或该黑点外方
Two members of the clubbing genus Lepidoptera Noctuidae, Sj accessorioides, summer maize production is newly discovered, sudden strong one of the major pests. For the first time in 2009, it was found in our county that an area occurred in 2010 and the degree of harm would increase. The pest damage symptoms in the field, the larvae of corn larvae damage to the general cause of the light corn plant seedling tilting, lodging, heavier plants caused by dead heart dead lack of seedlings off the phenomenon of maize, serious cases of corn fields appear large area No seedling space, and even need to ruin to heavy seed. Morphological characteristics of a pest Two members of the night worm moth body length 10 ~ 12mm, wingspan 20mm. The main identification features are: the forewing gray brown to dark brown, in the middle of the chamber and the end of a small black spots, black spots sometimes not obvious or black outside