File:Brachymyrmex F5.jpg

Summary

Figure 5. Morphological characteristics of the head of Brachymyrex. (a1) clypeus with five hairs of which a single long apical hair is positioned near the anterior margin, two in mediolateral position and two near the toruli (black arrow); (a2) clypeus with a row of long, thick hairs near the anterior margin (black arrow), toruli touching but not surpassing the posterior clypeal margin in oblique anterodorsal view (gray arrow); (a3) toruli surpassing the posterior clypeal margin in oblique anterodorsal view (gray arrow); (b1) eyes below the cephalic midline; (b2) eyes on cephalic midline; (c1) eyes with three or four ommatidia along the maximal diameter of the eye; (c2) eyes with more than four ommatidia along the maximal diameter of the eye; (d1) scapes short and not reaching the posterior margin of the head; (d2) scapes just reaching the posterior margin of the head; (d3) scapes long and surpassing the posterior margin of the head; the length by which the scapes surpass this margin is compared to the length of the maximal diameter of the eye; (e1) anterior clypeal margin with the medial portion forming a “lip”; (e2) anterior clypeal margin evenly convex without antero-medial “lip”; (f1) head with dense pilosity; (f2) head with sparse decumbent hairs; (g1) second segment of the antennal funiculus shorter than the first; (g2) second segment of the antennal funiculus as long or longer than the first.

Ortiz-Sepulveda, C.M., Van Bocxlaer, B., Meneses, A.D., Fernández, F. 2019. Molecular and morphological recognition of species boundaries in the neglected ant genus Brachymyrmex (Hymenoptera: Formicidae): toward a taxonomic revision. Organisms Diversity & Evolution. 19: 447–542. doi:10.1007/s13127-019-00406-2