Crop plants are the major sources for meeting human food requirements. Crop production not only depend on good agricultural practices but also weather conditions and other biotic factors. Among the biotic factors insects (bees, moths and butterflies) are playing immense role in increasing the crop production by the process of pollination. In all sexually producing crop plants pollination is the only way to increase economic yield. But in the name of development humans are creating unfavorable situations for increasing insect population indirectly leads to reducing crop yields. So there is a great need to change in human activities for getting sustainable crop yields.