二点委夜蛾是近两年在玉米上新发生的一种害虫,卵馒头状,上有纵脊,初产黄绿色,后土黄色。直径不到一毫米。成虫体长10—12毫米,翅展20毫米。雌虫体会略大于雄虫。头、胸、腹灰褐色。前翅灰褐色,有暗褐色细点;内线、外线暗褐色,环纹为一黑点;肾纹小,有黑点组成的边缘,外侧中凹,有一白点;外线波浪型,翅外缘有一列黑点。后翅白色微褐,端区暗褐色。腹部灰褐色。雄蛾外生殖器的抱器瓣端半部宽,背缘凹,中部有一钩状突起;阳茎内有刺状阳茎针。老熟幼 Two-point exoskeleton moth is a newly emerged pest on maize in the recent two years. The egg bread-like shape has vertical ridges and yellowish-green on the initial production. Less than a millimeter in diameter Adult body length 10-12 mm, wingspan 20 mm. Females know slightly larger than males. Head, chest, belly gray brown. Front wings grayish brown with dark brown fine spots; inside and outside the dark brown ring is a black spot; kidney pattern is small, with black spots composed of edges, the outer concave, with a white point; outside wavy, wing outer edge of a Black spots. Hind wings white brown, end dark brown. Abdomen taupe. Male moth outside the genital bivalve flap half wide, dorsal concave, the central hook has a bulge; Familiar young