a) Hairy caterpillar: The body hairs may be dense, sparse or arranged in tufts. Hairs may
cause irritation, when touched. Eg: Red hairy caterpillar.
b) Slug caterpillar: larva is thick, short, stout and fleshy. Larval head is small and retractile.
Thoracic legs are minute. Abdominal legs are absent. Abdominal segmentation is indistinct.
Larva has poisonous spines called scoli distributed all over the body. Such larva is also called
platyform larva.
c) Semilooper: either three or four pairs of prologs are present. Prologs are either wanting or
rudimentaly in either third or third and fourth abdominal segments. Eg: Castor semilooper.
