● North of Madera Canyon [Pima Co], AZ USA [el. 1218 m / 3998 ft] view location in Google Maps »
● 11/03/10 11:25AM sunny, air temp: 25°C / 78°F
[IMAGE3 of 3] Foraging is a dangerous occupation for Pogos. On her quest for seeds and other potential food items (like scavenged insects/insect parts), the P. imberbiculus worker from the previous two images blundered into a spiders lair. As can be seen here, her head was briefly caught in a silk snare. She lurched backwards, and broke free, just as the spider came over to investigate. If you look closely, you can see the colorful abdomen, and one leg of the unidentified spider. The ant continued foraging, and I eventually lost track of her.
These ants are quite difficult to image. On both of the occasions during this trip (Nov. 2010) that I observed P. imberbiculus, there were no more than two workers on the surface at any given time. They move along at a modest but steady pace, and pause infrequently (and very briefly).
- Pogolumina - Pogonomyrmex Harvester Ants of North America