Key to Trachymyrmex opulentus species group workers

This worker key is based on: Mayhé-Nunes, A. J. and Brandão, C. 2002. Revisionary studies on the attine ant genus Trachymyrmex Forel. Part 1: definition of the genus and the opulentus group (Hymenoptera: Formicidae). Sociobiology. 40: 667-698.

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• Mycetomoellerius
• Trachymyrmex species groups

1

• Lateral projections on the pronotum lower than anterior mesonotal projections . . . . . 2

• Lateral projections on the pronotum higher than anterior mesonotal projections . . . . . 3

2

return to couplet #1

• Superior corners of the head with a spine or teeth on each side; pair of blunt but distinct carinae on vertex . . . . . Mycetomoellerius opulentus

• Superior corners of the head rounded, without spines or teeth; carinae on vertex absent . . . . . Mycetomoellerius dichrous

3

return to couplet #1

• Propodeal spines slender: border of frontal lobes smooth . . . . . Mycetomoellerius relictus

• Propodeal spines stouter and shorter, smaller than the distance between its base and the propodeal spiracle; border of frontal lobes strongly crenate . . . . . Mycetomoellerius compactus