Thomas, as of two days ago, Louie also lost his head. (I have been at the hospital with my 93 yr-old mom so mantids are taking a back seat.) He's still on her back and I don't know if he ever connected. The first couple of days, he would try to connect if I blew on him gently, but I never saw it happen in the short time I have checked on the mantids each day. Here I thought they were one of the more docile mantids. Not Daisy.
I have one ooth from her, before she ate Huey, and I don't know if it is fertile. I have assumed not. The first ooth was Feb 26 so she could be thinking about another ooth shortly.
Will a female eat another female just for the heck of it? It's only Daisy (57) and Doris (30) left in the big aquarium. Lots of room and twigs so they could avoid each other if they want to. Both girls are round like my pinkie and not bulging. Actually, Doris is almost as old as Daisy was when she layed her first ooth (at 34 days). But I know that neither male has been near Doris, during the day at least.
Goodness, I was just updating my mantid chart and realized that both Huey and Louie lost their heads at 21 days old!