The separation of the basal and masticatory margins of the mandibles weakly defined with the dentition extending to the basal margin. Used in Antkey to separate Linepithema and Technomyrmex from Iridomyrmex.
Scratchpads developed and conceived by (alphabetical):
Ed Baker,
Katherine Bouton
Alice Heaton
Dimitris Koureas,
Laurence Livermore,
Dave Roberts,
Simon Rycroft,
Ben Scott,
Vince Smith
