That is correct Jeff. I’m from WA, and we have two very common native species of hover flies here. Simosyrphus grandicornis and Melangyna viridiceps, sometimes called Common halfband. You can tell them apart from the dark thorax of the latter.
These flies are good to have around. They are voracious predators of pests and also prolific pollinators. They are wasp mimics, and also migrate. Very common in this time of year when the hot winds start. I often see clouds of them hovering around on my veggie patch feasting on aphids.