The first gastral segment has small bumps or knobby protuberances on the dorsal surface. Used in Antkey to separate Acromyrmex species from Atta species.
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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
