where did all of the stink bugs come from
Brown marmorated stink bug The brown marmorated stink bug was accidentally introduced into the United States from China or Japan. It is believed to have hitched a ride as a stowaway in packing crates or on various types of machinery. The first documented specimen was collected in Allentown, Pennsylvania, in September 1998.[4][15] Several Muhlenberg College students were reported to have seen these bugs as early as August of that same year.[8][16] Between 2001 and 2010 there were fifty-four reported sightings of BMSB at shipping ports in the United States.[17] However, stink bugs are listed as non-reportable, meaning that they do not need to be reported or have any required action taken to remove the insect. This allowed the insect to enter the United States relatively easily as they are able to survive long periods of time in hot or cold conditions.
Bombardier beetle This reaction is very exothermic, and the released energy raises the temperature of the mixture to near 100 °C, vaporizing about a fifth of it. The resultant pressure buildup forces the entrance valves from the reactant storage chambers to close, thus protecting the beetle's internal organs. The boiling, foul-smelling liquid is expelled violently through an outlet valve, with a loud popping sound. The beetles' glands store enough hydroquinone and hydrogen peroxide to allow the beetle to release its chemical spray roughly 20 times. In some cases this is enough to kill a predator.[4] The main component of the beetle spray is 1,4-Benzoquinone, which is particularly irritating to the eyes and the respiratory system.