Species Name: Camazotz
Name in Avernite: Death Bats.
As the Avernite Bushmasters start getting closer to the tropics and them the equator, the quantity of new and dangerous species starts creeping up. Except that for the first time the signals of a new species that even the Siren's refused to give the name made alarms blare in the heads of the explorer.
The actual reason is simple, if there's is one species that preys on Sirens, these are the Death Bats, or as they prefer to call themselves, Camazotz, as was later discovered when a Siren shouted the name of creatures before being disemboweled.
From what the exploration team could gather there are three main species of Camazotz, which by what can be inferred, is the name of only the giant humanoid-like bats who feed solely and only of Psyker active species, the other species of Giant Humanoid Bats are broadly known as "leaf-noses". These three species are as Camazotz (the basal one), Hairy Legged Camazotz (who have a double leafed nose and don't have a prominent tail like the basal one), and the species known as White Winged Camazotz, similar to basal one, but with white wings.
The difference are easy to spot, a Camazotz is a hulking monstrosity made of skin and flesh, who moves on land on a quadrupedal gait, like a gallop, their long neck mane made of brown fur, and with big canines made to pierce and hold their victim in place as the saliva makes warp energy "leak" into their mouth together with the blood. The Hairy Legged one as the name suggest have more fur on the legs, double leafed noses and no visible tail, this is because their means of locomotion on land is more bipedal than the common Camazotz, and finally the White Winged one, who have clay-colored, light brown or dark cinnamon fur, and their wings are totally white.
According to the Sirens, what's really terrifying in them is that their specialization on eating Psyker active species turned in the end giving them "unfair" tools against their prey. A auspicious ability for tracking Psyker's based on sensors on their noses, giving them something similar to Witchsight.
A saliva that when spit at prey makes the victim lose the control of their powers leaving them prone, drugged and making the warp energy leak from the prey body, and last but not least, Warpfire, a truly raw, ancient and specialized type of warp power, who "consumes" all the energy around it, leaving a Psyker vulnerable without warp energy for use by himself.
AN: Camazotz is a Mayan Bat God, who was responsible to giving humans fire, but that asked for continuous human sacrifices so that humanity could use it.
AN²: Camazotz means Death Bat.
@Durin