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警纹地老虎[Euxoa exclamationis (L.)]自我国新疆开始发现后,西北其它各省(甘肃、宁夏)陆续有报导,作者在内蒙古西部地区研究小地老虎时也发现该虫。现将1963-1964年初步观察的结果简报如下。 该虫在呼和浩特和包头等地,主要在秋季以末代幼虫为害马铃薯、甜菜、萝卜、白菜和大葱等,特别对马铃薯和萝卜为害尤烈。其秋季为害方式与春夏间小地老虎、黄地老虎为害幼苗的情况不同,大多是幼虫在土
Euxoa exclamationis (L.)] Since the beginning of our country, Xinjiang, other provinces in the northwest (Gansu and Ningxia) reported one after another that the authors also found this pest in the study of Siberian tiger in western Inner Mongolia. The results of the preliminary observations of 1963-1964 are summarized below. The insects in the Hohhot and Baotou and other places, mainly in the autumn end-larvae of potato, beet, radish, cabbage and green onions, especially for potato and radish damage especially. The damage pattern in autumn is different from that of young tiger and yellow tiger in spring and summer. Most of them are larvae in soil