antennal scrobe weakly impressed

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Used to distinguish Tetramorium caldarium from Tetramorium simillimum but can be very subtle and difficult to observe. In the former species, the antennal scrobe is weakly impressed, and the frontal carina does not remain a distinct outside border of the scrobe, often disappearing or becoming very faint at its most posterior section.

Eli Sarnat
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith