The Permian–Triassic extinction event saw the greatest level of insect extinction, with the Cretaceous–Paleogene being the second highest. Insect diversity has recovered after past mass extinctions, due to periods where new species originate with increased frequency, though the recovery can take millions of years.
The Permian–Triassic extinction event witnessed the highest level of insect extinction, followed by the Cretaceous–Paleogene. Insect diversity has recovered after past mass extinctions due to periods with increased species origination frequency; however, recovery can take millions of years.