The brown marmorated stink bug, Halyomorpha halys, is native to Asia (China, 
Taiwan, Japan, and the Korean peninsula). It was first found in Allentown, Pa, 
in 1996 and has since spread across wide areas of the Eastern United States. As 
of October 2010, at least 26 states have reported the presence of the brown 
marmorated stink bug. It is considered an invasive species, and to the best of 
scientific knowledge, it was accidently introduced into the United States 
through transportation of goods from Asia. To date, no reports of human disease 
have been published in the literature. Fruit crop workers have complained of a 
slight allergic reaction to the chemicals released by the bug.