Mandibles of Stigmatomma roahady sp. n. worker; dorsal view (CASENT0004339). Teeth distribution layout indicated in the figure. Note the enlarged most basal tooth. Image by F. A. Esteves; available at AntWeb.org  
  Part of: Esteves FA, Fisher BL (2016) Taxonomic revision of Stigmatomma Roger (Hymenoptera: Formicidae) in the Malagasy region. Biodiversity Data Journal 4: e8032. https://doi.org/10.3897/BDJ.4.e8032