Have you ever swatted at a wasp before to keep it away from you? Well watch out! A new study finds that wasps are able to recognize faces.

Scientists have discovered that paper wasps are able to recognize and remember other wasp's faces and that they are pretty accurate at it, too.

The study conducted a test on wasps where they were put into the bottom of a T-shaped maze. Each wasp was shown two images of other wasps. One picture was shown to the wasp's left and the other to the wasp's right side. They conducted the test using a reward system. Showing a certain image as the wasp walked through the maze would always mean it would enter a safe zone. After awhile, wasps were able to distinguish which face meant the way to safety.

To test the theory further, the scientists replaced the face images with other types of pictures such as circles and squares. They found that the wasps learned the reward system much slower than they did when using the face recognition method.

They concluded that these types of wasps may need to use face recognition to survive because they have multiple queens in their group and each one of them wants to be dominant. By knowing who is stronger than who, they learn to tell each other apart mainly by differences in their facial features.

So the next time you try to kill a wasp, beware! They may remember you and come back to get their revenge!