Pedantry - Normal

The Rachni Wars were a series of conflicts beginning in approximately 1 CE, when a Salarian expedition from the Citadel Council activated the dormant Omega mass relay. This relay opened a route to territory controlled by the rachni, a species of highly intelligent space-faring hive-minded insects. The rachni were alarmingly powerful, having massive strength in numbers, and extremely hostile. Negotiation with the rachni was impossible.