Stigmatomma trigonignathum

Stigmatomma trigonignathum is one of the most rarely collected species in the world. Described from a single individual collected in 1948, and observed a second time in 2008.

Distribution
This species is known only from the Piedmont region of North Carolina.

Biology
Little information is known about this species. Workers have been collected from leaf litter samples (Brown 1949) and under rocks during the cooler period of the year in October and January.

Nomenclature

 *  trigonignathum. Amblyopone (Stigmatomma) trigonignatha Brown, 1949c: 81, fig. 1 (w.) U.S.A. Combination in Stigmatomma: Yoshimura & Fisher, 2012: 19.

Additional References

 * Yoshimura, M. & Fisher, B.L. 2012. A revision of male ants of the Malagasy Amblyoponinae (Hymenoptera: Formicidae) with resurrections of the genera Stigmatomma and Xymmer. PLoS ONE 7(3):e33325 (doi:10.1371/journal.pone.0033325).