When I took this picture, I wasn't out to get shots of jack fruit. I was looking at what's above the fruit, those inverted cones, which are tachi ant nests. There's also a bell wasp nest up on the next limb. It's not uncommon to encounter kids from the city climbing up into the jack fruit trees to get the fruit. I'm willing to bet that they won't mess with these! Click on the image for more details.