Red Weaver Ants are probably the most socially adept ant you will see in Thailand, the task of building the nest is itself a tribute to their communication skills. It takes many ants to form the nest, they do this by bending the leaves of a tree until the edges meet, they then spin silk from a larvae on to the corresponding edges to glue the leaves together.
I can’t remember ever seeing these ants sold as food in Pattaya, but I’m sure they probably are somewhere. In Isaan, the northeastern region of Thailand, they are still considered to be a delicacy, during the nesting season the eggs will be gathered from the nests and eaten raw or added to a salad.
Red Weaver ants are fiercely protective of their nest and can deliver a painful bite, because of their protective and territorial behavior they are sometimes utilized by farmers in Thailand, the farmer will deliberately introduce them to a tree so that the ants can protect it from other pests which eat the fruit.