Cabbage moth
youngest a transparent yellow to grey-green with a characteristic brown-black head capsule. After the third moult, the caterpillar is green with a dark back [...] General The cabbage moth (Mamestra brassicae) is a highly polyphagous defoliator. Besides being a major cabbage pest, it feeds on 70 plants of 22 families [...] becoming steadily darker until they are a brown-black or sometimes even a purple colour. They are ridged and have a light network of markings. First instar