I saw quite a variety of cockroaches in my relatively short outing to Monte Alegre. The first one, above, was the largest and was not altogether unattractive. It blended in well with the leaf litter.
The second one was a bit smaller, and was spotted in some low foliage.
This last one was the smallest, but the most robust.
It was moving slowly about until it encountered something tasty (rodent dropping?).