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黄野螟(Heortia vitessoides Moore)是土沉香的主要害虫。通过室内、外的观察,结果表明,土沉香黄野螟1年可以发生6代。11月下旬以老熟幼虫入土化蛹越冬。翌年4月初羽化。成虫趋光性弱。26℃条件下,卵期6.6 d,幼虫期14.1 d,预蛹期2.9 d,蛹期9.8 d,雌、雄成虫寿命分别为8.7和8.6 d。幼虫共5龄,1～4龄具群集性,5龄的取食量占幼虫期的70.24%。卵主要分布于寄主树冠下层嫩叶端部的背面。
Yellow borer (Heortia vitessoides Moore) is the main pest of Agastache rugosa. Through indoor and outdoor observations, the results showed that the soil Agrimony borer can occur 6 generations a year. In late November to mature larvae pupation overwintering. The following year emerge in early April. Adult phototaxis weak. Under the condition of 26 ℃, the oviposition period was 6.6 d, the larval stage was 14.1 days, the pre-pupal stage was 2.9 days, and the pupal stage was 9.8 days. The adult and male adults had life expectancy of 8.7 and 8.6 days respectively. The larvae were all 5-age, 1 to 4-age cluster, 5-year-old feeding accounted for 70.24% of the larval stage. The eggs are mainly distributed on the back of the end of young leaves below the canopy of the host.