Tonight’s new episode is titled “The Midges,” and it’s the one in which Elizabeth, on a mission that takes her to a remote greenhouse, uncovers the scary details of a covert plot to influence and weaken a rival superpower – but in this Reagan-era period spy series, it’s apparently the U.S. planning to use bio-engineered insects to destroy the Russian wheat crop. “Midge” is the name of the devastating, tiny little pest used as the object of wanton destruction in this devious agricultural attack. It’s also, for the record, the name of my sister…