The plant life of the planet adapted rapidly to the elevated oxygen, and within a million years large forests of ferns and jungle trees began to take over the equator, creating a hot, humid environment across the entire planet, with temperature averaging 80 degrees fahrenheit, and bottom out around 60 in the coldest days of winter. In the polar regions however, deciduous forests made for a far more habitable environment for small surviving mammals and birds, free from insect competition and sweltering heat
With the planet becoming more and more habitable by the generation, more and more wasp larvae begin to survive to adulthood, with this massive increase in population, and the increase in temperature as the planet became more humid, the wasp population o longer had to worry about overwinter population, as the equator, where most species survived, rarely fell below 60 degrees. Certain hives of the Apoidea began to grow massive, with the population peaking at 300,000 in a good year. The Formicidae also began to expand their colonies, and due to their multiple queens could house populations of over 1,000,000 individuals, most of them smaller than half and inch, but some growing to an inch in length. From here on out the wasps will be treated as five distinct groups, the Eusocial Vespids, Apids, and Ants, the small nested carnivore Skatharidae, known for hunting the many beetles that roamed the forest floor, and the parasitic Ichneumonidae.
The dermestid beetles that quickly radiated into many niches split into 3 distinct groups quickly after the extinction. The beetles that began to consume the bones and exposed marrow of the wiped out creatures became the Osteoridae. the beetles that continued their flesh eating habits became the Dermestidae, and the beetles that began to consume fallen leaves and dead plant matter became the Phteridae. Certain species of Phterids started to develop small colonies of only a few hundred, normally at the bases of large clumps of ferns or large surviving trees