Hive Mind "Behemoth"

The difference between humanoid creatures and primal creatures is intelligence, and morality. This strain of Xenos only contains one of those." - N/A
== Basic Genetic Qualities ==
Hive Mind Behemoth, otherwise known as "those shabbing crabs" are a strain of Insect-like Creatures, who possess unusual genetic traits, differing them from any other lifeforms as known in the Galaxy. While a mystery at the day's end, Republic Scientists have drawn connections from Hive Mind Behemoth creatures to the Xenian Infestation, notably the Antlion strain of species.
What appears to be a Caste System is present within the Society, a list of power starting from a Larva, Worker, Crusher, Biomass, and lastly, the Hive-mind itself.
The reasoning for the nickname "Hive Mind/Fleet Behemoth" is due to the organized nature of these creatures, with Worker Insects showing off a unique ability to grow a sentient Biomass, which is capable of exploiting heavy hydraulics, to advanced data software. This ability has led them to capture Republic Acclamator #4566, "EXPEDITIONARY," and piloting it to full functionality.
=== The Igarka Prime Incident ===
At 0555, infantry and mechanized units were deployed from the Republic Network known as 'Heimdall.' Troopers were dispatched to assist loading in Refugees from the Economic Collapse after Confederacy forces held the Capital hostage for ransom. Two Acclamators, #4566 and #4567 were landed at a Republic runway in the Sector. When they arrived, Republic Personnel stationed at the outposts were missing, a loose detachment of Refugees found wandering in the snow.
Infantry units escorted the Refugee crowd into Acclamator #4566, until a rapid of succession of earthquakes knocked off the landing gear of #4567, major damage to the runway, but both #4566 and Personnel remained relatively unharmed. This changed however when Biomass-like nests and tentacles show up into the surface, digging into damaged architecture and Emplaced weaponry on the Runway.
What followed was a desperate battle of loading abroad the Refugees, holding off Behemoth Workers, Crushers, and Biomass working together against Republic Forces and Property. Suspicions were launched after a Trooper reported in a Worker Bug seemingly 'melting onto a turret,' growing a green biomass and orange, crystal-like substances which have been studied to show connections to Xenian Crystals, which when energized, rip a hole open from our Destination to the Xenian habitat, causing a influx of xenos wildlife. After this Turret was infested however, a few seconds passed before the Sentient mass figured out how to manage the Anti-Infantry rounds, using it on Personnel, with Workers focused on hijacking Emplacements in the future, after learning of their effect.
When Refugee forces were loaded, LAAT Extract was marked on the runway after strafing runs were deployed on any Behemoth Infantry. Before this came however, large Tentacles gripped onto #4566, massive holes formed below it, hundreds of Workers spotted crawling up, and into improvised holes in the hull of the ship. All Hangar doors were closed, leaving 94% of Refugees presumed dead after Behemoth forces set up large nests in the engine of the ship, revealed from bioscanners. Biomass substances broke through the hull of the ship, possessing the Acclamator's heavy turrets and firing upon LAATs in the air. While 5 Bombing runs were flown down onto the Ship to prevent the spread, horror was struck into the Troopers as the Engines ignited at full capacity, causing a enormous waft of snow and rubble, not to mention fire catching onto remaining Infantry of both sides. While airborne units attempted to intercept the ship, it managed to Hyperspace out of the zone.
After the attack, the mission was deemed a failure due to the loss of the Refugees and a Acclamator, but members of command have appointed further strikes to intercept the Infested Capital ship using Volunteers and services from the Space Hulk Operations Board, with their previous ship-boarding and high-pressure excavations of Acclamator #5877, "IMPERIUM."