In multiple regions of Earth, cockroaches developed sentience by means of a natural virus with mutagenic genes. A long time ago one such colony made its home inside a house of a scientist. The colony has lived in that house ever since. The roaches are intelligent enough to understand/learn human languages and they work as a hive mind with a big queen who acts as the synaptic nexus of the hive, she is the voice, the brain, and the breeder.
The queen (who has to be carried by her workers as she is too big to walk, just saying) finds out that the scientist will soon try to exterminate the colony.
How does she communicate with the scientist and ask for endangered species protection?