Murder hornets. (Not to be confused with their close relatives: accessory-to-murder hornets, involuntary-manslaughter hornets, justifiable-homicide hornets and turning-state’s-evidence hornets.) Killer hornets. Asian giant hornets. Or the more politically correct Continent Which Must Not Be Named giant hornets.

The invasive insects go by a confusing array of names; but the New York Times, National Geographic, NBC News and other sources are warning Americans about the potential impact of their spread.

A colony of murder hornets can wipe out a honeybee hive in a matter of hours, decapitati...