In August, the Asian longhorned beetle emerges from trees to feed on leaves and bark before mating, laying eggs and starting another generation of tree-killers. Credit: Michigan Department of Natural ResourcesBy Rachel LewisThe Michigan Invasive Species Program is asking the public to be on the lookout for the invasive Asian longhorned beetle. Although Michigan does have many native beetle species that look similar to the Asian longhorned leetle, the size of the tree holes are specific to the invasive beetle. Characteristics of the Asian longhorned beetle. The DNR says to report any sightings to its hotline, 1-866-702-9938, or the Asian Longhorned Beetle webpage.