The subpetiolar process has a fenestra at the anterior end, and often also has a posteriorly projecting angle or tooth. Used in Antkey to separate Ponera from Hypoponera.
Scratchpads developed and conceived by (alphabetical):
Ed Baker,
Katherine Bouton
Alice Heaton
Dimitris Koureas,
Laurence Livermore,
Dave Roberts,
Simon Rycroft,
Ben Scott,
Vince Smith
