A long leathery egg case was found in Aracaria cunnighamia plant. In the same plant three praying mantis were also seen. The egg may be of praying mantis
Near the egg case a praying mantis was seen regularly
Not yet emerged. So examined microscopically and found it is already emerged egg case.
In this long egg case two cavities were there inclined upward and a single door- like lid for these two openings. Young one emerging out by pushing the lid upward. The lid is constructed in such a way that no water can enter inside the case