Well, what if Genesect act like actual bee and termite colonies? Despite being part-machine, they probably still have some biological capabilities like the use of pheromones. So perhaps it's possible Genesect released pheromones because the others are like the drones, but we see it happen with glowing eyes? Which would make Red Genesect female, unless the male could do it too...?
It would be neat... and it would make some sense, but mind-control using radio waves or whatnot, okay. Since they're part-machine now, it would make sense for some instinctual behavior to be reduced or even enhanced because of the added technology.
I'm thinking too hard on this.