Camponotus gilviceps

I found the trail of huge Camponotus species, which I think Camponotus Gilviceps. They were forging nearby a small creek in the jungle.

 

Major worker examing the photographer. Some of the major workers were just standing, and examing something in the air with their antenna. I think they were protecting themseleves from small parasite flies.

Kepong, Kuala Lumpur, Malaysia