Michigan is one of the country's finest destinations for summer fun, attracting millions of tourists worldwide each season. These visitors bring valuable tourism dollars, but they also act as transport for deadly invasive species imported from other countries or states. One of these tree-killing interlopers, the hemlock wooly adelgid, has just been found in a seventh county in Michigan.

Related: Michigan Invasive Species Has Potential to Explode in Population

MLive reports that a private landowner in Antrim County, near Torch Lake, has reported the hemlock wooly adelgid, which the Michigan Department of Agriculture and Rural Development has confirmed. This is the seventh county where these hemlock-killing bugs have invaded since entering the state. Infestations have already been verified in Allegan, Benzie, Mason, Muskegon, Oceana, Ottawa, and Washtenaw counties.

Identifying and Stopping the Spread of Hemlock Wooly Adelgids in Michigan

Tree Killer Found in Michigan: Invasive Species Threatens Forests
Mountain Lake PBS via YouTube / Canva

The hemlock wooly adelgid originally came to the United States from Asia. Its favorite snack is hemlock trees, of which Michigan has an estimated 170 million. Michigan's hemlock trees are crucial to sustaining the state's natural habitat, as they provide shelter during the harsh winters and food for native species.

Related: Michigan DNR Invasive Species Watchlist: Northern Snakehead

The hemlock wooly adelgid's egg sacs are tiny, white, cotton-like masses no more than 1/16" to 1/4" in size. They are found on Michigan hemlock trees at the base of their needles on the underside of the tree's branches. Though active year-round, they are at their most visible November - July.

Tree Killer Found in Michigan: Invasive Species Threatens Forests
Mountain Lake PBS via YouTube / Canva

If left to spread, the hemlock wooly adelgid can devastate Michigan's hemlock trees and upend the state's food chain and shelter for our native animals. If you think you've spotted this tree assassin, take some pictures, note the location to the best of your ability, and report the sighting to one or all of the following:

The only way to protect our state forests is to remain on the lookout for these and other Michigan invasive species that threaten our state's environment.

The Deadly 7: Michigan's Most Venomous and Poisonous Threats

In Michigan, we may not have hurricanes or gators, but we have bugs that carry fatal diseases, blister-causing plant life, and 3 deadly native Michigan species.

Gallery Credit: Scott Clow

Plant Some Of These In Your Garden to Keep Mosquitoes Away

As we previously told you, mosquitoes are the most dangerous creatures on earth. If you want to keep them away from you're yard, these plants can help!

Gallery Credit: Michelle Heart

Quiz: Do you know your state insect?

Stacker has used a variety of sources to compile a list of the official state insect(s) of each U.S. state, as well as their unique characteristics. Read on to see if you can guess which insect(s) represent your state. 

Gallery Credit: Andrew Vale