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在苏联所有植棉共和国里,棉铃虫是棉花最主要的害虫之一。也正如在南欧、中国、印度支那、印度、巴基斯坦、阿富汗、伊朗、士耳其的棉区,以及非洲、中美、北美植棉地区、澳大利亚东部地区的情况一样。在苏联、当气候条件适合棉铃虫发育的年份,特别是在秋季长时期温暖的第二年里,这种害虫便大量的繁殖。这很明显地说明了,棉铃生在我们这里越冬差不多完全在蛹期阶段,所有其他发育阶段(幼虫、成虫、卵)由于严寒而被冻死。
Cotton bollworm is one of the major cotton pests in all the cotton-planting Republics of the Soviet Union. Just as in the cotton areas of southern Europe, China, Indochina, India, Pakistan, Afghanistan, Iran, and Turkey as well as the cotton-padding areas of Africa, Central and North America, and the eastern part of Australia. In the Soviet Union, when the climatic conditions are suitable for the development of cotton bollworm, especially in the second year after a long warm autumn, the pests multiply. This clearly shows that the cotton boll wears through the winter is almost completely in the pupal stage, and all other developmental stages (larvae, adults, eggs) are frozen to death due to severe cold.