Yashiro, T., K. Matsuura, B. Guénard, M. Terayama, and R. R. Dunn. “On the Evolution of the Species Complex Pachycondyla Chinensis (Hymenoptera: Formicidae: Ponerinae), Including the Origin of Its Invasive Form and Description of a New Species”. Zootaxa, vol. 2685, no. 1, Nov. 2010, pp. 39–50, doi:10.11646/zootaxa.2685.1.3.