榆叶蝉越冬虫态,据历年在莎车调查,以卵在榆、桃树枝皮层下越冬,立春四月中旬开始孵化为第一代若虫,孵化盛期为四月中下旬,末期为四月下旬至五月初.历年孵化较一致而整齐,除一九五八年由始见至盛期较短(2天)外,其他年分均为8—10天. Elm leafhopper overwintering state, according to the calendar year investigation in Shache, with eggs in elm, peach tree cortex wintering, beginning in mid-April hatch for the first generation of nymphs, incubation period for the mid to late April, the end of April From late October to early May, the hatchings in the past years were more consistent and neat. Except for the shortest (2 days) from the initial peak to the peak in 1958, the rest of the years were 8-10 days.