Soybean aphids swarming in Illinois

DECATUR -- A biologist says you should avoid wearing yellow for the next week or two, or else you'll attract even more of those tiny swarming bugs that have been all large parts of Illinois recently.

Phil Nixon, entomologist for the University of Illinois Extension Office, says the insects actually are soybean aphids, and they'll be around for about another week.

The aphids are normal in the northern quarter of the state, but have been swarming as far south as Effingham and St. Louis this year

Nixon says the aphids originated in Asia and have been in the United States since 2000. They are on the move now because they're migrating from their summer host, soybean plants, to their winter host, buckthorn plants.

They are color that has yellow as a primary component.