Examples of antenna with 4 segments in S. emmae (A MAC_S20_LLSP_sp.7, photographed by IBBL) and of antenna with 6 segments in S. feae (B ANTWEB1017082, photographed by IBBL).

 
 
  Part of: Brassard F, Leong C-M, Chan H-H, Gue╠ünard 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