Figure 34 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 34 - Head of workers of camillae species group. A Mystrium barrybressleri sp. n. (CASENT0129838) B Mystrium barrybressleri sp. n. (CASENT0129840) C Mystrium barrybressleri sp. n. (CASENT0045009) D Mystrium camillae (CASENT0102123) E Mystrium labyrinth sp. n. (CASENT0003281). A major worker (holotype) B minor worker (paratype) C major worker D major worker (lectotype) E minor worker (holotype) A, B, E in full-face view C, D clypeus in oblique anterior view C a pair of spatulate setae on the anteromedial portion of clypeus is long D a pair of spatulate setae on the anteromedial portion of clypeus is short.