(Encountered this large lady (Mantis religiosa), about 3 inches long, in the road a few days ago. I almost ran over her on my bike; she looked like a leaf, until she skittered away.
We don't have mantises here. Which leaves two possibilities:
1. She's a doomed relic of organic pest control. As I've never seen an adult here, I've always assumed that purchased egg cases either don't hatch or the hatchlings spread to the four winds and are lost. However, there is a large garden nearby.
2. This is yet another indicator [along with this and this and this and this] that we've pushed the weather cycle into freefall.
Note abdomen full of eggs.)