Once they have wings, they are adult. I don't think they need to shed at the same time, depends on how much it eats, etc. I have a question, though - I found a mantis yesterday in my yard that is bright green like your avatar - European mantis - what is the difference between the European mantis and the Chinese mantis? The ootheca we hatched and released into our yard were all Chinese mantids (some brown w/ a green stripe on its wings and some that are yellowish/tannish), so I was surprised to see this bright green one. He is sub-adult, I see wing buds. Just curious what the difference is if anyone on the board can describe for me, thanks. I live in Northern California.