Explanation:

Aulacophora is a genus of beetles in the family Chrysomelidae, commonly known as pumpkin beetles; some species are pests of agricultural crops.
Adult pumpkin beetles feed on the foliage and flowers of the host plants; seedlings may be destroyed by heavy attacks and young plants may be severely affected. Several beetles may cluster on a single leaf, leaving other leaves untouched. The beetles feed between the veins, often cutting and removing circular discs which they then eat.[1] The larvae tunnel into the roots, which become swollen, discolored and distorted, and the plant may die.