Metapone quadridentata, paratype, small worker 28 head in full-face view 29 body in lateral view 30 waist segments in lateral view 31 body in dorsal view.

 
 
  Part of: Wang WY, Yamada A, Eguchi K (2019) Discovery of a new ant species of the elusive termitophilous genus Metapone in Singapore (Hymenoptera, Formicidae, Myrmicinae), with the first detailed description of male genitalia of the genus. ZooKeys 876: 125-141. https://doi.org/10.3897/zookeys.876.35739