pronotal spines absent

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The pronotum or promesonotum lacking spines or teeth. At most it is armed with blunted humeral angles. Used in Antkey to separate all other myrmicine genera from Atta and Acromyrmex.

see also:: 
pronotal spines present
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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