Abstract:
An Insect is an organism with three pairs of jointed legs, a pair of compound eyes, a pair of antennae and three body parts. Insects are the most dominant organisms on earth. They can be found in nearly all environments with the ocean having the least insect species. Although the diversity of insects remains uncer-tain, estimates range from 1.4 to 1.8 million species. There are mainly two sub classes of insects; Apteryota (wingless) and Pteryota (winged), with over 30 orders. The four dominant orders in terms of described species are Coleoptera, lepidop-tero, Diptera and Hymenoptera, with Coleoptera having the majority of species. The majority of insects are harmless many are beneficial while others cause damage to plants and anima le (pests).