Insect and Spider Identification: ID please for crazy looking spider from Colombia, 1 by jimahy

jimahy wrote:
We saw this spider in out Christmas holidays in the Los Llanos region of Colombia. Having shared this photos, I had a question as to what is extra web decoration in an X formation is for - for which I have no idea. Which also made me curious as to what sort of spider this is. Interesting also that it keeps 2 sets of legs together while resting. The spider was about 2-3 inches, and while we were there it caught and wrapped a fairly large (4-5 inch) butterfly it\'s web. Thanks in advance for any input.