I found this sweat bee on the Colgan Creek trail in Southwest Santa Rosa. It was sunny and a little cold with the temperature being 62 degrees Fahrenheit.
These very fast ants looked as though they were gold-plated. Observed on road pavement through wet, high-elevation forest.
It was among some Thai bananas
Santa Barbara County, California
About 1/2 inch long. Only one seen in middle of trail.
These little black ants were climbing on a local park tree.
I assume Monomorium sp