● Castolon [Loc 41] Big Bend N.P., TX USA [el. 660 m / 2164 ft] view location in Google Maps » ● 3/06/10 10:27AM sun/haze, air temp: 18°C / 64°F Though too early in the season for new seeds to be available (at this location), these P. desertorum workers could be seen inspecting, and even transporting dry bits of plant matter. We did not observe any of this material being taken into the nest, however. [scroll down for additional notes/references] ADDITIONAL NOTES/REFERENCES: The integument (outer body covering) of these P. desertorum workers was quite translucent. When back-lit by the sun (as can be seen in some of these images), these ants glowed with the most beautiful orange-red color. In some cases, x-ray-like hints of their internal anatomy could be seen as well. - Pogolumina - Pogonomyrmex Harvester Ants of North America