Figure 59 from: Brassard F, Leong C-M, Chan H-H, Guénard B (2020) A new subterranean species and an updated checklist of Strumigenys (Hymenoptera, Formicidae) from Macao SAR, China, with a key to species of the Greater Bay Area. ZooKeys 970: 63-116. https://doi.org/10.3897/zookeys.970.54958

Figure 59 Examples of mandible with straight external margin in S. stenorhina (A CASENT0900840, photographed by Ryan Perry) and of mandible with curvilinear external margin in S. exilirhina (B MAC_S01_LLSA_sp.3, photographed by IBBL).