The parasitic wasp’s abdomen boasts a set of flappy paddles lined with thin bristles, resembling “a small bear trap attached to the end of it,” said study co-author Lars Vilhelmsen from the Natural History Museum of Denmark.

An extinct species of parasitic wasp dating back nearly 99 million years was found preserved in amber, according to researchers.

The abdominal apparatus of Sirenobethylus is unlike anything previously reported from any extant wasp or indeed any insect known to us,” the team wrote in their study. Researchers posited two theories to explain the anatomy.