I know of a few ooths in my yard. However, I must have had no idea about this one. I started finding little nymphs at one corner of the house yesterday. I was incubating a european mantis ooth over there this past winter and it suddenly went missing after a storm. I wonder if that is where they are coming from. They could also be chinese or carolina. I lean towards chinese since I found an adult female in a bush there last year.