Key to Afrotropical Tetramorium angulinode species group

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This worker key is based on Bolton (1980)[1]

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NOTE: Tetramorium sudanense is not included in the key as the type seems to be lost.

1

  • Basal quarter to one half of first gastral tergite densely shagreened and opaque, this sculpture strong and very distinctive, sometimes appearing as minute striolae due to alignment of the punctulae ..... Tetramorium legone
[[|thumb|220px|Tetramorium legone]] [[|thumb|255px]] [[|thumb|255px]]
  • Basal quarter to one half of first gastral tergite smooth or at most with a narrow band of coarse, separated punctures immediately behind the postpetiole . . . . . 2

2

return to couplet #1

  • Petiole in profile usually with anterior peduncle shorter than the thickness of the node at its mid-height. Rarely the two measurements approximately the same, in which case the node is stout and substantial, and SI<120 ..... Tetramorium africanum
Tetramorium africanum P casent0280920.jpg
Tetramorium africanum D casent0280920.jpg
  • Petiole in profile usually with anterior peduncle much longer than the thickness of the node at its mid-height. SI>120 ..... Tetramorium aculeatum
Tetramorium aculeatum P casent0904859.jpg
Tetramorium aculeatum D casent0904859.jpg