Paratrechina
There are many genus of Paratrechina in China, from north to the south. The common one is Paratrechina longicornis which been called Black crazy ants. They have a incredible speed of movement which make them looks crazy. You could see their large raiding party in the summer, all workers, larvas and queens are running together. They like not only sugar but also prey on wounded creatures for protein. The number of workers could easily reach over 20000.
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