These bugs are of unknown insect species, unknown origins and are not native to the planet Earth.
In Episode 7, they are only known to be found in Laboratory 51 of causing an outbreak. They are aggressive, they bite humans and wherever they had bitten, hair grows. What's worse is that shaving the hair off, only makes it grow longer. Luckily, the Protectors' scientists made a quick cure and was sent to Agent Brains to get Fred and her beards removed.