Cracker butterflies live only in the Neotropics. The males make a cracking sound with their wings as part of their territorial display, thus giving the name "cracker" to the genus Hamadryas. They are well camouflaged against their usual perch on the trunk of a tree.
One of the crackers, possibly Brownish
Of these flowers, the only one I know anything about is the first, a species of milkweed. Our guide Leonidas confirms that he has seen banded caterpillars, likely of Monarch butterflies, on the plant. The other flower photos are purely for your enjoyment!
Tropical Milkweed, Asclepias curassavica
I suspect that this butterfly is one of the tigerwings, likely in the genus Hypothyris. Others in that group show a similar orange patch on the thorax.
A probable tigerwing
Rather more earthbound than the butterflies, this big snail is nonetheless quite attractive!