This is everything you need to know about stink bugs and what you should do if you find them in your home. Brown marmorated stink bugs are an invasive species from Asia that arrived in Pennsylvania in 1996 and can now be found from South Carolina to New Hampshire and west to Indiana, as well as in California and Oregon. It has been observed on hundreds of tree species in the Mid-Atlantic States but it is unclear what species will be preferred in Minnesota. The brown marmorated stink bug, Halyomorpha halys (Stål), is a voracious eater that damages fruit, vegetable, and nut crops in North America. The brown marmorated stink bug (BMSB; Halyomorpha halys) is native to Taiwan, Japan, Korea and China. Stink bugs are typically a pest found outside, but the brown marmorated stink bug is a new species that has been making its way indoors this season, according to … Brown marmorated stink bug is an invasive species. Eggs are 0.06 in. Life Cycle Adults emerge from overwintering in April. Most egg masses have about 25 eggs. The biggest threat to biodiversity in Pennyslvania is damage to native species of vegetation that the stink bug preys upon. (0.16 cm), pale green and laid from June to August. The brown marmorated stink bug, Halyomorpha halys, is an invasive pest that is present throughout much of the United States.The species is native to Asia and was introduced into the United States in the mid-1990s, possibly stowing away in a shipping container. With a mottled brown, 1/2 in. It will attack a large variety of plants-more than 170 species-including many fruits and vegetables. It also becomes a nuisance pest of homes as it is attracted to the outside of houses on warm fall days in search of protected, overwintering sites and can enter houses in large numbers. Because Brown Marmorated Stink Bug is one of the worst invasive insects that the Mid-Atlantic region has experienced, it inevitably comes with extreme economic impacts; "some growers have lost their entire crop to stink bug infestations…This adds up to many millions of dollars of losses in crop values. Eggs are 0.06 in. The first identification of the BMSB in North America was in Pennsylvania in 2001, but records of this insect go back to the mid-1990’s. The Minnesota Department of Agriculture monitors this invasive species. Life Cycle Adults emerge from overwintering in April. Local Concern: The brown marmorated stink bug has been shown to affect yields in fruit, nut, legume and vegetable crops in the Eastern United States. The brown marmorated stink bug … The nymphal stages do not have developed wings. All … They can carry diseases. The nymphal stages do not have developed wings. Life Cycle Adults emerge from overwintering in April.