pest ants

Tapinoma sessile, the odorous house ant, with larvae Last summer I replaced the old covering on our porch roof. When I peeled back the rotting shingles, I was greeted by a frenzy of frenetic brown ants- thousands of them- running about every which way. Dozens of fat queens scurried for cover. It was an impressive display of formicid infestation, reminiscent of the swarms of invasive Argentine ants in California. But these weren't exotic pests. This was a native species, Tapinoma sessile, whose pleasant blue-cheese odor lends it the name  "odorous house ant". Tapinoma sessile is found…