Petiole and subpetiolar process in profile view. A Proceratium vinaka (CASENT0187587) B Proceratium oceanicum (CASENT0171053) C Proceratium relictum (CASENT0194740) D Proceratium caledonicum (CASENT0172099).

  Part of: Liu C, Fischer G, Economo EP (2015) A rare ant on Samoa: first record of the cryptic subfamily Proceratiinae (Hymenoptera, Formicidae) and description of a new Proceratium Roger species. Journal of Hymenoptera Research 46: 35-44.