Key to Afrotropical Tetramorium dumezi species group

This worker key is based on Bolton (1980)

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 * Tetramorium
 * ''Afrotropical Tetramorium species groups
 *  Key to Afrotropical Tetramorium species groups
 * Group diagnosis

1

 * Clypeus entire . . . . . 2
 * Clypeus medially impressed . . . . . 3 (jauresi complex)

2
return to couplet #1
 * Abundant long soft curved acute hairs forming a dense pelt all over the body and on the legs . . . . . 5 (meressei complex)
 * Pilosity sparse and usually short and fine. . . . . 6 (dumezi complex)

3
return to couplet #1
 * With the mesosoma in profile, dorsum without standing hairs of any description . . . . . 4
 * With the mesosoma in profile, dorsum with standing hairs that are longer than broad ..... Tetramorium nodiferum

4
return to couplet #3
 * First gastral tergite reticulate-punctate or shagreened at least in its basal half. Dorsal mesosoma feebly reticulate-punctate. Mandibles generally retaining delicate longitudinal striation ..... Tetramorium jauresi
 * First gastral tergite completely smooth. Dorsal mesosoma smooth with patchy vestiges of sculpture. Mandibles smooth with scattered small pits ..... Tetramorium qualarum

5
return to couplet #2
 * Propodeum with a pair of teeth. Colour clear pale yellow. Petiole node in profile more or less evenly convex, without differentiated anterior or posterior dorsal angles ..... Tetramorium meressei
 * Propodeum merely angulate or with a pair of minute tubercles. Colour brown. Petiole node in profile not evenly convex, with differentiated angles ..... Tetramorium psymanum

6
return to couplet #2
 * Dorsal (outer) surface of hind tibiae with projecting erect to subdecumbent strong hairs . . . . . 7
 * Dorsal (outer) surface of hind tibiae without projecting hairs . . . . . 8

7
return to couplet #6
 * First gastral tergite finely and densely punctulate ..... Tetramorium isipingense
 * First gastral tergite unsculptured, smooth and highly polished ..... Tetramorium candidum

8
return to couplet #6
 * Leading edges of scapes with erect short hairs or long strong subdecumbent hairs. First gastral tergite covered from base to apex by a strong dense consistently coarse reticulate-puncturation ..... Tetramorium elidisum
 * Leading edges of scapes only with fine short pubescence, which is usually decumbent or appressed. First gastral tergite unsculptured or with a basal band of punctulation or shagreening . . . . . 9

9
return to couplet #8
 * Pronotal dorsum with a coarse straight longitudinal costa medially which dominates the remaining rugulose sculpture. Colour brownish yellow ..... Tetramorium pialtum
 * Pronotal dorsum without a coarse median costa, the surface weakly longitudinally rugulose. Colour pale yellow ..... Tetramorium dumezi