File:Xu and Chai 2004 protensa sp nov head worker correct.png

Head in full face view Tetraponera protensa

Xu, Z.-H, and Chai, Z.-Q. 2004. Systematic study on the ant genus Tetraponera F. Smith (Hymenoptera, Formicidae) of China. Acta Zootaxonomica Sinica 29(1): 63-76 PDF