pair of small tubercles on cephalic dorsum anterior to posterolateral spines

The head has a pair of small teeth or blunt angles anterior to the posterolateral spines. Used in Antkey to separate Atta sexdens from Atta cephalotes. This is a variable character, and should be used with caution until its usefulness is confirmed.

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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