The hooded mantises are the most convincing leaf-mimicking mantids. C. stalii is one of two species that occur in Ecuador (Lombardo & Agabiti 2001). It is endemic to the Napo rainforest.
Specimen contributed by V. Belluz.
iNaturalist observation

Reference:
Lombardo, F., and Agabiti, B. 2001. The mantids from Ecuador, with some biogeographic considerations. J. Orthoptera Res. 10(1):89-104.