This is a terrific engineering technique that WEAVER ants have developed and adopted where they squeeze their own larvae as living silk glue for building their nests on plants. Some group of ants drag and roll up the leaf edges while the other group stick leaf edges together very carefully by applying their own living silk glue. No wonder, they are one of the most social creatures on this Earth. This is also a new aspect of insect life as well mysteries of Mother Nature!!!