The term 'butterfly' is derived from the butter-yellow colour of common Brimstone male butterfly of the family Pieridae. The butterflies are cosmopolitan in distribution and occur in every suitable environment, from plains to deserts, forests, and valleys of hills to mountains.Butterflies are holometabolic endopterygote, often wings provided with tails, a characteristics venation and clothed by overlapping scales. The mouth parts are modified into coiled proboscis; the antennae are knobbed or clubbed at the anterior end. Butterfly larvae feed on the leaves of their host plants or diverse...

Among insects butterflies occupy a vital position in ecosystems and their occurrence and diversity are considered as good indicators of the health of terrestrial biota. Butterflies are valuable pollinators in the local environment and help in pollinating more than 50 economically important crops. Butterflies are an excellent choice for monitoring the habitat quality. Butterflies are one of the best studied groups and are highly sensitive to habitat disturbances; they are commonly used as indicator of environmental quality. the classification, species number and conservation of butterflies are...