8:31 PM: We’re hearing from multiple readers about an insect invasion in the Alki area. Stephanie said she went out for a walk and “was covered in” small blue aphid-type bugs. An earlier texter said they believe the bugs are smoky-winged ash aphids. So far we haven’t found history of them swarming in Seattle, but they seem to be a periodic problem in Eastern Washington – a recent report there points to this WSU website report from 2017, describing them as “hovering masses of puffy gnat-like bugs.” This time of year, the females lay eggs, and that’s the reason for the swarming.
9:47 PM: Commenters from all around the peninsula are reporting sightings, so we’ve updated the headline. We’ll be trying to track down an expert tomorrow to see if we can find out more.