Pogonomyrmex barbatus

Officially known as the 'red harvester', this large Pogo is often erroneously referred to as the 'Texas harvester' (a name correctly applied to Pogonomyrmex texanus only).

Typical length of worker ranges from 7.0mm to 9.5mm [Taber 1998], and typical coloration ranges from bright red, to deep red. There are areas where this ant has hybridized with Pogonomyrmex rugosus, resulting in lineages possessing some morphological traits of both species.

Pogonomyrmex barbatus makes substantial gravel nest mounds of varying heights, often with central depressions, although the structures sometimes take the form of flat gravel discs. Nest population can reach 12,000 ants in a mature colony. P. barbatus is a trunk-trail forager.

The US range of this ant includes Texas, and parts of the following states: Arizona, Arkansas, Colorado, Kansas, Louisiana, New Mexico, Oklahoma, and possibly Nevada and Utah. Its range covers most of Mexico, excluding some northwestern, and central-western areas.

[IMAGE: Pogonomyrmex barbatus worker at San Antonio Missions Nat'l Park, Texas USA] [scroll down for additional notes/references]

ADDITIONAL NOTES/REFERENCES:

·Cole, A.C. 1968. Pogonomyrmex Harvester Ants: A Study of the Genus in North America. Knoxville, University of Tennessee Press
·Johnson, R.A. 2000. Seed Harvesting Ants (Hymenoptera: Formicidae) of North America: An Overview of Ecology and Biogeography. Sociobiology Vol.36, No. 1, 2000
·Taber, S.W. 1998. The World of the Harvester Ants. College Station, TX, Texas A&M University Press