The left half is the ant- elbowed antennae, narrow waist, wings of different sizes. The right half is the termite-straight antennae, no waist, wings of the same size. Swarmers for either are not always black. Just because they’re swarming in your home or office-DO NOT PANIC! Vacuum them up. They dehydrate and the swarmers of our native species will not infest wood unless the wood is wet. They are repoductives looking for a mate. You may not have any damage yet. Call us for a free evaluation.