玉米耕葵粉蚧,属于同翅目粉蚧科,是寄生玉米根部的一种新害虫,主要危害玉米、小麦、高粱等禾本科作物及杂草。一、形态特征雌成虫体长3~4.2毫米,宽1.4~2.1毫米,扁平长椭圆形,红褐色,全身覆一层白色蜡粉,眼椭圆形,发达而突出,触角8节,足发达。雄成虫较小,深黄褐色,3对单眼,紫褐色,触角10节,口器退化,胸足发达,3对足,前翅长0.83毫米,白色透明,后翅退化为平衡棒。卵长0.49毫米,长椭圆形,橘黄色,孵化前浅褐色,卵囊白色,棉絮状。若虫共有两龄,一龄若虫体长0.61毫米,无蜡粉;二 Corn cultivated mealybugs, belonging to the family Homoptera, are new pests of the parasitic maize root, which mainly endanger grasses and weeds such as corn, wheat and sorghum. First, the morphological characteristics Female adults body length 3 ~ 4.2 mm, width 1.4 ~ 2.1 mm, flat oblong, reddish-brown, body covered with a layer of white wax, oval eyes, well-developed and prominent, antennae 8, enough developed. Male adult smaller, dark brown, 3 pairs of monocular, purple brown, tentacles 10, degenerative mouth, thoracodorsal developed, 3 pairs of feet, front wing length 0.83 mm, white transparent, hind wings degenerated into a balance bar. Egg length 0.49 mm, long oval, orange, light brown before hatching, oocysts white, cotton-like. A total of two nymphs, nymphs of an age 0.61 mm, no wax;