Most people who have a garden have seen weaver ants. Many hate them — and for good reason. That bite is sharp, sudden, and leaves a burning sensation that stays with you. Anyone who has accidentally brushed against a mango branch with a weaver nest on it knows exactly what I mean. And the nest itself — that too is familiar. Large leaves folded and packed tight, like those old-fashioned leaf parcels from a grocery shop. The kind vendors used to wrap betel leaves or vegetables