Tetramorium simillimum species group

Based on Bolton 1979, 1980, Hita Garcia and Fisher 2011, and Agavekar et al. 2017.

Diagnosis
Hita Garcia and Fisher (2011) - Twelve-segmented antennae; anterior clypeal margin entire and convex; frontal carinae variable; anterior face of mesosoma well developed with distinct anterodorsal angle separating anterior face from dorsum; margination between lateral and dorsal mesosoma usually weak; propodeal spines triangular and short to absent; propodeal lobes broad, triangular and short, more voluminous and larger than propodeal spines; petiolar node in profile nodiform, in profile higher than long, in dorsal view weakly wider than long to as wide as long, anterodorsal and posterodorsal angles well-developed and of about same height; postpetiole in profile roughly rounded; mandibles smooth to weakly and finely sculptured; cephalic sculpturation distinct and predominantly longitudinally rugose; mesosoma and waist segments with distinct sculpturation; base of first gastral tergite often weakly sculptured, rest unsculptured and smooth; all dorsal surfaces of head, mesosoma, waist segments, and first gastral tergite with sparse to abundant short, stout, and blunt standing hairs, never short, dense, and appressed; sting appendage triangular.

Agavekar et al. (2017) - [Note: this diagnosis is only applicable to the few species occurring in the Indomalayan region, and not to the remainder of the Afrotropical group fauna]. Twelve-segmented antennae; anterior clypeal margin complete and unspecialized; eyes of moderate size; antennal scapes short to moderate, not surpassing posterior head margin; antennal scrobes either present without clear demarcation or absent; frontal carinae moderately to strongly developed but always surpassing eye level; base of first gastral tergite not concave in dorsal view, without tubercles or teeth on each side; pilosity on dorsal surfaces of body erect with short and thick hairs; sting appendage dentiform.

Additional Resources

 * Tetramorium
 * Tetramorium species groups
 * ''Afrotropical Tetramorium species groups
 *  Key to Afrotropical Tetramorium species groups
 * Key to simillimum group species