Weaver Ant
Weirdness 8/10

The Ants That Sew Their Nests Shut Using Their Own Babies

Weaver ants stitch leaves together using their own larvae as glue guns.

📋 Fact File
🐾 Insect🍽️ Omnivore (insects plus sweet honeydew)
📏 Size
Workers about 0.5-1 cm (0.2-0.4 in); queens about 2-2.5 cm
A worker is about as long as your little fingernail
Lifespan
A colony can last about 8 years
Not EvaluatedNot on the IUCN Red List — weaver ants fill the treetops of tropical Asia and Australia, and farmers even use them as living pest control.
🤔 Guess first

Which one is REALLY true about the Weaver Ant?

The short version

Adult weaver ants cannot make silk. So they carry their own larvae out to the seam and squeeze them until they release silk, using their young as living needles.

Why it's so weird

  • The Weaver Ant builds its nest by stitching living leaves together while they are still growing on the tree.
  • The Weaver Ant carries one of its own larvae out to the seam and squeezes it gently until it releases silk.
  • The Weaver Ant cannot produce silk at all as an adult, so it uses its young as living tools.
  • The Weaver Ant links its body to other workers to form living chains that haul a distant leaf edge closer.
  • The Weaver Ant passes a larva back and forth along the join like a needle until the leaves are sealed.
📏 How big is it, really?
Weaver Ant
1 cm
Weaver Ant
a 7-year-old
1.2 m
🧒

You could line up about 122 of them along a 7-year-old!