Tag Archives: thief ant

This is a sandy soiled prairie in the Southwest Nature Preserve in Arlington, TX. The Comanche harvester ant, Pogonomyrmex comanche, has about 50 active colonies in this area.

Preliminary Identifications for the SWNP – prairie ants

Here is a list of the ant species, tentatively identified for the Southwest Nature Preserve, Arlington, Texas — from the prairie site where the Comanche harvester ant is nesting.

Crematogaster lineolata

Dorymyrmex flavus and D. sp.

Forelius mccooki

Nylanderia arenivaga and N. vividula

Pheidole sp. (only minors)

Pogonomyrmex comanche

Solenopsis xyloni and Solenopsis sp. (Diplorthoptrum group, thief ants)

Trachymyrmex turrifex


Solenopsis xyloni (smaller, shiny ant, lower) and Trachymyrmex septentrionalis (larger, rough looking ant at top) at the entrance to the T. septentrionalis nest.

Follow up to Of Ants and Nests

I went back to the Trachymyrmex septentrionalis nest the day after observing Solenopsis xyloni easily entering the nest. There were no S. xyloni there which means the two species are not nesting together. What S. xyloni was doing is still a mystery. There are other smaller species in the Solenopsis genus referred to as thief ants (S. molesta, for instance). It may be that S. xyloni was a thief but I did not observe this thieving behavior.