The posterior margin of the head generally convex and narrow before arching towards the eyes. Used in Antkey to separate Pheidole punctatissima from Pheidole bilimeki and Pheidole anastasii.
Scratchpads developed and conceived by (alphabetical):
Ed Baker,
Katherine Bouton
Alice Heaton
Dimitris Koureas,
Laurence Livermore,
Dave Roberts,
Simon Rycroft,
Ben Scott,
Vince Smith
