yes, the ant alien species grew up an a planet where ant aliens evolved in dominance over all other species.

This is exactly what they plan to do here, first they out-populate the current dominant species, but appear to be harmless like small little tiny ants.

However then at the right moment, their antennas send out a signal to the alien ant species to send them genetic upgrades which enhance their size into a humanoid form.

All of the sudden, they burrow out from under the ground and then take over the planet.