posterolateral corners of head lacking spines

The posterolateral corners of the head are unarmed and lack distinct posteriorly projecting spines. Used in Antkey to separate all other myrmicine genera from Acromyrmex and Atta.

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Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith