Golden-threaded cordyceps. At first glance it resembles an earth tongue, but digging down into the soil shows its true nature: like other cordyceps, this one is parasitic. Rather than attacking insects, it infects underground puffballs
Modified by CombineZP
After we got off of the raft, our guide came over and showed us this butterfly, which was clinging to this leaf, a victim of a fungus.
Cordyceps is a type of fungus that takes over an insect's brain, causing it to cling to an exposed point (like a stem or a leaf), before the insect dies and the fungus can spread its spores.
On coffee in Cuba
So few fungi about that the best I can find is a dead spider
The Cordycipitaceae are a family of parasitic fungi in the Ascomycota, class Sordariomycetes. The family was first published in 1969 by mycologist Hanns Kreisel, but the naming was invalid according to the code of International Code of Nomenclature for algae, fungi, and plants. It was validly published in 2007.