PIERIS RAPÆ.
The common English variety, Small Cabbage White. The fore-wings are creamy white, with an irregular blackish mark at the tip. The male generally has a black spot in the middle of the wing, the female having two; and both sexes have two black spots on the underside, which is of a yellowish colour, thickly dotted with small black atoms. All the markings vary greatly, however. The larva is dull green, with a yellowish stripe on its back and yellow dots on the side. It generally feeds on the cabbage, but is found also on the nasturtium. It is very common, and may be found everywhere from February to October. The Ichneumon fly is a great enemy to this insect.