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This is Scientific American's 60-second science. I'm Christopher in Taliatta.

Picture a prehistoric human encampment in a cave.

What do you see?

Maybe some animal hides, bones from last night's dinner, a small fire.

But what you might not picture are the other cave dwellers, like bats, and the bugs that suck their blood.

The bedbugs that we all know and love from hotel rooms and apartments and all that were

originally bat parasites. Martin Adams is an archaeo entomologist with paleo-insect research.

It's a private business in Portland, Oregon. Adams and his colleague Dennis Jenkins

analyzed the remains of bedbug cousins,

recovered from one of those prehistoric camps, the Paisley Caves in eastern Oregon, and they

pin the insects to three different species within the Cimics genus, the same genus as bedbugs.

Now these bugs are bat parasites, not the species that commonly bite humans, but they ranged from 5,100 to 11,000

years old, making them the oldest example of blood-sucking bed bug relatives cohabitating with humans.

The studies in the Journal of Medical Entomology.

As to whether the cave-dwelling humans were as paranoid as modern humans about the infestation...

The humans living in Paisley Caves probably knew that there were bats living in the caves.

I sincerely doubt that they knew that there were bat bugs infesting the bats.

...