The pronotum or promesonotum lacking spines or teeth. At most it is armed with blunted humeral angles. Used in Antkey to separate all other myrmicine genera from Atta and Acromyrmex.
Scratchpads developed and conceived by (alphabetical):
Ed Baker,
Katherine Bouton
Alice Heaton
Dimitris Koureas,
Laurence Livermore,
Dave Roberts,
Simon Rycroft,
Ben Scott,
Vince Smith
