粉蝶类的幼虫,农村通称菜青虫。菜青虫是铜仁城区十字花科蔬菜头号害虫,常年大发生。通过1981、1982两年在铜仁城关蔬菜队系统调查和室内饲养,明确了为害蔬菜的粉蝶类,不仅有菜粉蝶,还有东方粉蝶、黑脉粉蝶。由于常年为害重的是菜粉蝶,因此重点研究了此虫。本文所提到的菜青虫,即为菜粉蝶的幼虫。 Pieris larvae, common in rural areas cabbage caterpillar. Pieris rapae is the number one cruciferous vegetable pests in Tongren District, occurring year round. Through the 1981,1982 two years in Tongren Chengguan vegetable team system investigation and indoor rearing, clearly harmful to vegetables, butterflies, not only cabbage butterflies, as well as oriental butterflies, black veins butterfly. As perennial pests for the cabbage butterfly, so focus on this pest. Pieris rapae mentioned in this article, namely, larvae of the butterfly cabbage butterfly.