It has in fact only been in recent times that the Warrior Primes have been identified and reported to exist amongst the ranks of the various Hive Fleets, though many Imperial savants and Adeptus Mechanicus Magos Biologis are quick to point out that this is less likely to be because they are a recent evolution and more likely because they simply blend in with the other standard Tyranid Warriors. Primes are also being encountered in greater and greater numbers within Hive Fleet Dagon, perhaps as a direct response to the constantly evolving tactics of Imperial forces and the Hive Fleet’s need to deal with the elevated Deathwatch presence in the Orpheus Salient after several costly encounters.