Figure 54 from: Yoshimura M, Fisher B (2014) A revision of the ant genus Mystrium in the Malagasy region with description of six new species and remarks on Amblyopone and Stigmatomma (Hymenoptera, Formicidae, Amblyoponinae). ZooKeys 394: 1-99. https://doi.org/10.3897/zookeys.394.6446

Figure 54 - Head of the ergatoid queens of voeltzkowi species group in full-face view. A Mystrium eques sp. n. (CASENT0418317: paratype) B Mystrium janovitzi sp. n. (CASENT0482696) C Mystrium mirror sp. n. (CASENT0318940: paratype) D Mystrium oberthueri (CASENT0496064) E Mystrium shadow sp. n. (CASENT0077647: paratype) F Mystrium voeltzkowi (CASENT0002092).