We have had a praying mantis hanging on the inside of our screen door for about two months. It finally molted its third molting. Did you know praying mantises molt? Neither did I! Apparently, they turn green and get their wings after the third molt. We have tried to "release" it and it just doesn't want to leave that narrow place between the glass sliding door and the screen door. I think it's all those delicious dead bugs stuck in the cracks. Maybe it will fly away now.