Someone asked me what the white substance is on the tarantula because that is not the usual color for a tarantula.
I am afraid that this unfortunate tarantula is infected with Cordyceps, a parasitic fungus that invades its hosts (mainly arthropods), and eventually replaces the host’s tissue with its own parasitic tissue.

Reserva Ecologica Taricaya, Puerto Maldonado, Peru, 12 June 2009