Native to China, Japan, Korea and Taiwan, the stink bug (Halyomorpha halys) has actually been in the U.S. since 1998 where it was first discovered in Allentown, Pennsylvania. Since then, evidence of these non-native stink bugs already had been documented in 15 states. What brings the bugs back into newsworthiness is that the number of states invaded has more than doubled over the last year; the innocuous-looking insect has now officially spread to 33 U.S. States, leaving large swathes of fruit orchards and other crops riddled with its tell-tale bore-hole signatures.