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Figure 5. Generic diagnostic characters of Mystrium and the differences from Stigmatomma. A Mystrium voeltzkowi (CASENT0002075) B Stigmatomma mystriops (INB0003690672) C Mystrium mirror (CASENT0317582) D Mystrium janovitzi (CASENT0080644). A, B, C worker D male A, B mandible in oblique mesal view C abdominal segment VII in lateral view D aedeagus in lateral view.

Yoshimura, M. & Fisher, B.L. 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. doi:10.3897/zookeys.394.6446