Brown Marmorated Stink Bug The Stink Bug Invasion By Sean Crawford • Oct 3, 2019 extension.oregonstate.edu As cooler weather arrives this fall, certain insects are looking to head indoors. Among those bugs that want to share your home is a relative newcomer to Illinois. The brown marmorated stink bug has been showing up here since about 2010. This Little Guy Is Raising A Stink By Sean Crawford • Oct 16, 2016 The Brown Marmorated Stink Bug. Not a very pretty name. But it's becoming more likely you'll be seeing this invasive species around your home. They are showing up in more parts of Illinois. And, that's raising concerns.