The scientific name of Cotton big bridge worm is called Ascotis selenaria diarnia Hübner .Its alternate name is Cotton big bridge insect、Cotton big looper.It belongs to Lepidoptera and feet moth insects and it is a kind of looper.Its insect state inculding egg、larva、pupa and adult, it belongs to complete abnormal condition. The larva has a slender body, action a stretched down like a arch bridge, so it is also named the bridge insect 、Step procedure; the body can inclined to unbend such as branch shape when it is rest.The adult has big wing , slender body and short hair, and the feeler is filamentous or pinnate, so called "feet moth".The larvae often as the typical representative of " mimesis".The larvae harms fruit trees、tea trees、white mulberry、cotton and forest and its maid feedings are blade and tender stem, it can cause bare phenomenon when Seriously.
Control method: in the larva 1-2 age period,annual per mu uses the 80 - 100 ml 10 billion spores/ml Empedobacter brevis GXW15-4 pesticide to add 60-80kg water to spray in the pros and cons of cotton blade uniformly. |
