These are “ant-plant” trees, which famously cooperate with fierce Azteca ants; the trees provide shelter and food to the ants, and in exchange the ants defend their leaves against herbivores.

Sometimes, they jump out on purpose to avoid encounters with aggressive Azteca ants. Either way, the flying spiders want to ...

Azteca ants protect green coffee scale, an insect pest of coffee, from predators and parasites in return for honeydew, which the scale secretes. Disclaimer: AAAS and EurekAlert! are not ...