Tyranid Locust Swarm
Like a swarm of locust, this attack group strikes from above, devouring everything that its sweeps over.
Harridan
The Harridan is one of the largest flying creatures. It has two bio-cannons and a pair of scything claws for swooping low and slashing up tanks. This bio-monster can not match an aircraft speed, but its lithe, twisting body is far more manoeuvrable allowing it to twist and turn to avoid enemy fire. Harridians acts also as a vessel for the Gargoyles who hooks and claws themselves to the Harridian for longer distances.
Gargoyles
Gargoyles are a species of winged Tyranids derived from Termagants that are also often the first wave of a Tyranid swarm in battle for the purpose of sowing terror and confusion. They carry Fleshborers and can spit a skin-burning venom.