Tetramorium tsushimae full face view of worker (click photo to enlarge).
Photo courtesy of http://www.antweb.org/

Tetramorium tsushimae, side view of worker (click photo to enlarge).
Photo courtesy of http://www.antweb.org/

Introduction
Tetramorium species are distributed worldwide with the largest diversity in being in Africa. Several species have been spread across the globe by human commerce. Non native species are generally found in urban environments and often in large numbers.

Tetramorium species can be identified separated from other myrmicine spines but the combination of the following characteristics: lateral part of the clypeus forming a sharp wall anterior to the antennal insertion; frons; 11 or 12-segmented antennae with three-segmented antennal club; antennal scrobe present from antennal insertion point to the posterior corner of head; two segmented waist; sting with a lamellate appendage found apicodorsally that projects at an angle to the long axis of the sting shaft.

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