Spore mantis

"A gigantic precursor to the Phasmatodea order, the Spore Mantis is, in essence, a stick insect the size of a mature redwood tree. The limbs of its bark-skinned body house a powerful muscle system that is a unique interweaving of striated tendons and fibrous structural tissues more commonly found in the stems and roots of trees. These appendages allow the Spore Mantis to scuttle across ground at alarming speed. A new king of trees has been crowned. The General Sherman tree might have the record in terms of height, but then again the General Sherman can't get up and hunt you down. Housed within an epidermis of bark and vascular tissue, the Spore Mantis' trunk is host to a large, slug-like parasite with spiked teeth and bone-crushing jaws. The digestive system uses a protein-rich sap to digest and encase the bodies of its prey, before excreting the remains, perfectly preserved as crystalline amber droppings that clearly reveal what it has eaten within. Our cryptobiology department appreciates the transparency."