Thanks, Julien. I'm not sure I could offer any identifying features, as they're very, very small.
On a previous trip, I'd stepped on a nest of fire ants. Didn't need to look those buggars up in a book. I try to stand on pavement now when possible.
They're bombing the bedroom now. I don't know with what, didn't ask.
Meanwhile, I've at least found a treatment for the itching: aloe vera. We have it growing in the front yard. Works great. But apparently we have an actual Avon rep in the neighborhood, so I'm going to pursue the Skin So Soft option - I could use some softening anyhow.
Another downside to this place: they only play Kenny Rogers on the radio. It's all Kenny, all the time. "You Decorated my Life" will not leave my head now.