Complex sentence: The Endopterygota are among the most diverse insect superorders, with at least 680,000 living species divided between eleven orders, containing insects such as butterflies, fleas, bees, ants and beetles.
Split into simpler sentences: The Endopterygota are among the most diverse insect superorders, with at least 680,000 known species divided between eleven orders. Or to use more familiar names; insects such as butterflies, fleas, bees, ants and beetles.