During last few decades the use of chemical pesticides has increased dramatically in both developed and developing countries. The use of synthetic chemicals to control insect pests and phytopathogens results in several ecological problems. The synthetic insecticide residues left in the soil and water cause toxic effects on fishes, wild life, domestic animals and finally humans. Biopesticides are naturally occurring substances derived from animals(e.g. nematodes), plants and microorganisms(e.g. Bacillus thuringenesis, Trichoderma). Biopesticides are applied in similar manner like chemical pesticides, very effective in the the control of pests and ecologically friendly in nature. The secondary metabolites like phenols, alkaloids and terpenoids etc are naturally produced from plants and posses biological properties like antimicrobial, antifungal and pesticidal properties. This review focussed mainly on the nature of different insect pests listed below 1.Acanthoscelides obtectus 2.Brevicoryne brassicae 3.Callosobruchus chinensis 4.Callosobruchus maculates 5.Crocidolomia pavonana 6.Corcyra cephalonica 7.Epilachna varivestis 8.Helicoverpa armigera 9.Henosepilachna vigintioctopunctata 10. Macrotermes bellicosus 11. Rhyzopertha domin ica 12. Sitophilus oryzae 13. Spodoptera litura 14. Tribolium castaneum and the damaged caused by them to different crops in field and storage. The aim of this review is to improve awareness about the plants and their products which can be used in the manufacture of biopesticides at industrial level.
