Coleoptera ( /koʊliːˈɒptərə/), an order commonly called Beetles, is an order of insects; from Greek κολεός, koleos, "sheath"; and πτερόν, pteron, "wing", thus "sheathed wing", which contains more species than any other order in the animal kingdom, constituting almost 25% of all known life-forms. About 40% of all described insect species are beetles (about 400,000 species), and new species are discovered frequently. Some estimates put the total number of species, described and undescribed, at as high...
