Petraeomyrmex

There is a single species from Florissant shale (Oligocene) from Colorado, USA.

Identification
Female. - Small; head subquadrate; scapes short, thick; eyes small, situated on the sides of the head, anterior to the middle line; petiole very small; forewing with two cubital cells.

Castes
queen

Nomenclature
The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants. Barry continually updates his Catalogue and thus the following information reflects an up-to-date accounting of ant taxonomy. We are indebted to Barry for making this information available.

Genus *PETRAEOMYRMEX Taxonomic history
 * Petraeomyrmex Carpenter, 1930: 55. Type-species: *Petraeomyrmex minimus, by original designation.
 * Petraeomyrmex in Dolichoderinae, Tapinomini: Hölldobler & Wilson, 1990: 17.
 * Petraeomyrmex in Dolichoderinae: Shattuck, 1994: 135; Bolton, 1994: 26; Bolton, 2003: 90.
 * Petraeomyrmex incertae sedis in Dolichoderinae: Carpenter, 1930: 55; Ward, Brady, et al. 2010: 362.