first gastral segment with deep longitudinal furrows

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First segment of the gaster (abdominal segment 3) with deep parallel longitudinal furrows running the length of the segment. Used in Antkey to separate Gnamptogenys from other genera.

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first gastral segment without deep longitudinal furrows
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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