Examples of vertexal margin strongly concave in S. formosa (A RHL003476, photographed by IBBL) and of vertexal margin weakly concave in S. membranifera (B MAC_S21_LLSP_Sp.2, photographed by IBBL).

  Part of: 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