Figure 4 from: Hita Garcia F, Hawkes P, Alpert G (2014) Taxonomy of the ant genus Proceratium Roger (Hymenoptera, Formicidae) in the Afrotropical region with a revision of the P. arnoldi clade and description of four new species. ZooKeys 447: 47-86. https://doi.org/10.3897/zookeys.447.7766

Figure 4 - Head in profile showing eye (white arrows indicate location of eye, if present). A Proceratium nilo (CASENT0235688) (Will Ericson 2011) B Proceratium arnoldi (CASENT0914281) (Michele Esposito 2014) C Proceratium burundense (CASENT0902427) (Will Ericson 2013).