Give the economic importance of lac insect.

Explanation

Economic importance of lac insect :
1. Lac is largely used as a scaling wax and adhesive for optical instruments. It is used in electric industry, as it is a good insulator.
2. It is used in preparations of shoe and leather polishes and as a protective coaling of wood.
3. It is used in laminating paper board, photographs, engraved materials and plastic moulded articles.
4. Used as a filling material for gold ornaments. Some insects are natural predators of lac insects. The caterpillars of these parasites feed upon lac insects showing hyper-parasitism.