b) Scarabaeiform: Body is
‘C’ shaped, stout and subcylindrical. Head is well developed.
Thoracic legsa re short. Caudal processes are absent. Larva is sluggish, burrowing into wood or
soil. Eg: grub of rhinocerous beetle.
2) POLYPOD OR ERUCIFORM: The body consists of an elongate trunk with large sclerotised
head capsule. Head bears a pair of powerful mandibles which tear up vegetation. Two groups of
single lensed eyes found on either side of the head constitute the visual organs. The antenna is
short. Three pairs of thoracic legs and upto five pairs of unjointed abdominal legs or prologs are
present. Thoracic legs are segmented and they end in claws which are used for holding typically
bears rows or circlet of short hooked spines or crochets which are useful in clinging to the
Insect Morphology and Systematics
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exposed surface of vegetation and walking. Abdominal segments three to six and ten typically
bear prologs. Eg: caterpillar (larvae of moths and butterflies).
