The first is the Mottled Veld (field) Antlion - Palpares caffer - which is very large. This one was about 3” in body length with a 4” length to its wings.
They have two sets of wings and the patterns on each are vastly different.
They are a very widespread species, extending in tropical Africa and are found in a variety of habitats.
This is its larvae who travel freely just under the soil ambushing prey.