Figure 6 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 6 - Differences in characters of the worker mandible and labrum between XMAS clade genera and Amblyopone. A, C, E XMAS clade genera (Stigmatomma) B, D, F Amblyopone. A Stigmatomma pallipes (CASENT0247077) B Amblyopone australis (CASENT0100424) C Stigmatomma oregonense D Amblyopone australis. A, B labrum C, D usage of the mandibles E, F pattern diagrams for mandibular use. A dentiform labral seta is absent B dentiform labral setae are present C, E the masticatory margin is the main functional part of the mandible in XMAS clade species D, F the whole mandibular shaft is the functional part of the mandible in Amblyopone. C, D Photos by Alex Wild.