Myrmicinae: key to genera couplet 5
Key: modified from Wheeler & Wheeler (1986), Hölldobler & Wilson (1990), Bolton (1994)
Taxa remaining

Formicoxenus*#
Harpagoxenus#
Leptothorax
Protomognathus#
Trachymyrmex*



Figures 64,65. Myrmicinae: Trachymyrmex septentrionalis

Figure 66. Myrmicinae: Leptothorax texanus davisi

5.Promesonotal dorsum with numerous prominences, tubercles, teeth, or spines (Fig. 64); antennal fossa bounded by a delicate carina which runs diagonally inward from the mandibular insertion past the medial border of the eye (Fig. 65).
(Tribe Attini, the 'fungus growing ants', one species, Trachymyrmex septentrionalis collected in Illinois, Indiana, and Kansas)
...Trachymyrmex*
    Promesonotal dorsum smooth to coarsely sculptured, but not with prominences, tubercles, or spines (Fig. 66); no superocular carina (Tribe Formicoxenini). ...6.


Please send any questions or comments regarding these pages to Tim Linksvayer (Tim.Linksvayer@alumni.carleton.edu)
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