蚱蝉(Cryptotympana atrata Fabricius)属同翅目,蝉科。又名黑蝉,俗名知了。在我国分布很广,据有关文献记载辽宁、河北、河南,山东、陕西、四川、云南、贵州、广东、湖南、江西、安徽、江苏、浙江、福建、台湾等省均有发生。尤其是黄河故道沙土地区发生更为普遍,且数量多,危害较重。危害的树种有柑桔、梨、苹果、葡萄、桃、李、杏、樱桃、山楂等。由于成虫产卵在枝条内,危害较重时造成大量枝条枯死。蚱蝉数年发生一代。若虫生活在土中,接近羽化时于夜间钻出土面,爬到树干或草杆上脱皮羽化。6月份开始羽化,7月下旬为羽化盛期,特别是在雨 Grasshoppers (Cryptotympana atrata Fabricius) is a Homoptera, Cicadidae. Also known as black cicada, common name known. The distribution in our country is very wide. According to the relevant records, Liaoning, Hebei, Henan, Shandong, Shaanxi, Sichuan, Yunnan, Guizhou, Guangdong, Hunan, Jiangxi, Anhui, Jiangsu, Zhejiang, Fujian and Taiwan provinces all occurred. In particular, the occurrence of the Yellow River old sandstone area is more common, and the number of more serious harm. Harm tree species are oranges, pears, apples, grapes, peaches, plums, apricots, cherries, hawthorn and so on. Due to the spawning of adults in the branches, resulting in heavy damage when heavier branches dead. Occurred a few generations of grasshoppers. Nymphs live in the soil, near the emergence of the drilled soil surface at night, climbed to the trunk or straw stem peeling. Feather begins in June and plumage in late July, especially in the rain