Camponotus mirabilis are in the same genus as ordinary carpenter ants found in most temperate countries. As bamboo specialists, their queens faced curious evolutionary pressures. The widths of the stems are fixed. Their heads cannot be wider than 2.6mm. But, the queens must be large enough to lay many eggs.
The result is the miraculous elongated head. The smaller workers look like ordinary carpenter ants, the majors have square head, the queens... are remarkable.
