When animals or insects get my attention, there is a book that I refer to called Animal-Speak by Ted Andrews. According to that book, praying mantis symbolizes the "power of stillness". This was helpful for me and may also benefit you.
The praying mantis is a reminder to quiet the mind. That can be through meditation or sleep time. For me, I had not been getting enough sleep. Constant thinking about issues in life may also be draining. Some quiet time may be what is needed to bring balance to the body, mind and soul.
Thank you, Chinese praying mantis, for showing up yesterday. It is time for me to learn about the "power of stillness"