Brown marmorated stink bugs show no signs of stopping their advance in the Pacific Northwest. But last fall, Oregon launched the first attempt to stop the voracious invasive pest with the help of a longtime foe — a tiny wasp with a taste for its eggs. Scientists have studied the parasitoid wasp — Trissolcus japonicus — under strict quarantine for about 10 years to see if it could be safely deployed as a biological control on brown marmorated stink bug without risks to native stink bugs or other unintended consequences. Signs were promising, but after T. japonicas was discovered in […]