Let's say you're an up-and-coming invasive species, where would the hip place to hang out be? Probably Maryland, temporary home of the infamous northern snakehead (Channa argus) and likely permanent home of the mute swan (Cygnus olor). That's exactly where the emerald ash borer beetle (Agrilus planipennis) has headed as well, according to this article from the Washington Post. The insects, first discovered in the U.S. last year, had previously been found only in Ohio and Michigan. An as of yet unidentified nursery in Maryland received at least one shipment of contaminated ash trees, which will now be destroyed, from another nursery in the state of Michigan (which has banned the sale or transport of ash trees in several counties). Officials are also looking into whether the nursery in question accidentally shipped the contaminated trees to a site in Virginia as well.