Tetramorium marginatum, Forel, 1895

Francisco Hita Garcia, T. T. & Fisher, Brian L., 2011, 3039, Zootaxa 3039, pp. 1-72 : 52-54

Tetramorium marginatum species group

Diagnosis

Eleven-segmented antennae; anterior clypeal margin medially impressed; frontal carinae well-developed and usually ending between posterior eye margin and posterior head margin; anterior face of mesosoma not well-developed and no distinct anterodorsal angle present; mesosoma moderately to strongly marginated, dorsum usually sharply separated from lateral mesosoma; propodeal spines long to extremely long, and spinose; propodeal lobes triangular and short; petiolar node in profile triangular or cuneiform, anteroposteriorly compressed dorsally, in profile much higher than long, in dorsal view typically distinctly wider than long and transverse, anterior and posterior faces not parallel, anterodorsal angle much better developed and higher situated than posterodorsal angle, dorsum usually tapering strongly backwards posteriorly; postpetiole roughly rounded; mandibular sculpturation usually strongly to completely reduced; cephalic sculpturation to a large extent reduced and absent; mesosoma in most species completely unsculptured, in two species weak irregular longitudinal rugae/rugulae present; waist segments and gaster unsculptured, smooth, and shiny; all dorsal surfaces of head, mesosoma, waist segments and first gastral tergite with few to relatively abundant standing hairs, never short, dense, and appressed; sting appendage spatulate.