The total known species of organisms in the world is about 1.8 million including plants, animals, microbes, fungi and people . Within this numbers, more than half species are from insects .
In total, the number of insect orders may range between 29 to 39, depending on authors for classification of the Class Insecta. Among this, 13 orders is the most common group of insect. The example and picture of the common group of insects is mentioned as below.
- Chavan V., Rane N., Watve A. Resolving taxonomies discrepancies: Role of electronic catalogues of known organisms. Biodiversity informatics. 2005;2: 70-78
- Speight M.R., Hunter M.D., Watt A.D. Insect ecology : concept & application. Oxford: Wiley- Blackwell; 1999. pp 11