Pomegranate and Mantis Egg Cases

We have very health praying mantis and assassin bug populations here. By summer's end they're usually crawling all of the house. So it's nothing to walk around and see dozens of egg cases when all the leaves hae dropped for winter. It looks like the "Russian Pomegranate" must be a favorite for mantises to lay egg cases on. As you can see in the picture, there are six cases in the center of this one plant.