Maybe it would be helpful to list some example for Statesman? I've bugged the missions I've come across that don't list bosses now, since it's clear they're supposed to indicate such.
Here's one with dual must-defeat Lesser Devoured bosses:
Capture Several Test Subjects
"I just spoke with Dr. Victor Ido, that researcher you rescued from the Devoured Earth. He said that his lab is nearing a major breakthrough in determining the source of those strange biological contaminants they found in both normal human blood and and in the recently Devoured creatures in order to confirm their conclusion. Will you capture some Devouring Earth creatures for the scientists to study?
Well, it's all for science. They've located some appropriate creatures, and I've isolated them with an emergency force field. Just take the light rail over to the Ulysses Keys."
The green text is the missions, not mine. No indication of dual must-defeat bosses (right next to each other, no less) and in fact, the mission text seems to indicate that "capturing" any kind of Devoured will do.