The Mystery of the Web on the Spikey Fruit

Did they move? What was the shape? Are ants walking around them? Guarding them? Yes, the ants were guarding them I think the spikes of the fruit provides a very useful scaffolding for them to weave a web around the fruit So basically, I had to peer over someone's railing to look at these. The chap whose house it was came out and then I had to explain my creepy-looking presence with my head inside his tree. Managed to do that. Then he went in and came out with soursop juice for me!

So his explanation was "These are good ants. They come and weave this web and protect the fruit while it's growing. When the fruit has fully grown, they leave the fruit and go away." But I think the sap sucking bugs are feeding on the fruit and the ants are tending them, no? are these bugs that have been moved there by the ants? but I'm finding something different online - saying that the weaver ants are actually helping with pest control