A mutated “biotype B” insect emerged in Napa Valley in 1980 and did an estimated $6 billion of damage before wide-scale uprooting, burning and replanting was completed in 1995.
1980年，加州纳帕谷出现了一种基因突变的“同型小种B型”蚜虫。 这种蚜虫造成了估计60亿美元的损失，随后葡萄园开始了大规模连根拔除，烧毁并重新栽种于1995年完成。
Objective to study the species distribution on mosquitoes, midges and horse flies of important blood-sucking diptera insect in Heilongjiang river valley.
目的调查黑龙江流域重要吸血双翅目昆虫蚊、蠓、虻的种类分布。
Objective to study the species distribution on mosquitoes, midges and horse flies of important blood-sucking diptera insect in Heilongjiang river valley.
目的调查黑龙江流域重要吸血双翅目昆虫蚊、蠓、虻的种类分布。
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