posterior head margin flat (Tetramorium simillimum)

The posterior margin of the head is generally flat and lacks a median impression. Used in Antkey to separate Tetramorium simillimum from Tetramorium caldarium. This character is based on examination of limited material, however, and requires further study before its usefulness can be verified.

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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