File:Mackay and Mackay 2008 Simopelta22.jpg

Figure 22. Head of a worker of S. pergandei (from Wheeler, 1935), showing the medial clypeal spine.

[[Media:Mackay E Mackay W 2008.pdf|MacKay, W.P., MacKay, E.E. 2008. Revision of the ants of the genus Simopelta Mann (pp. 285-328). In Jíminez, E., Fernández, F., Arias, T.M. & Lozano-Zambrano, F.H. (eds). Sistematica, biogeografia y conservación de las hormigas cazadoras de Colombia: 609 pp. Instituto Alexander von Humboldt, Bogota. PDF]]