A 2013 PLOS ONE study revealed the oldest example of insect sex ever discovered. The fossil dates to the mid-Jurassic Period, about 165 million years ago.
The two love bugs were caught indiscretely, with the sex organ of the male clearly inserted into the female's bursa copulatrix.
Examples of fossilized insect sex are quite rare, with only about 40 specimens found around the world. Most are trapped in amber, like this spider attack.
Modern froghopper genitalia doesn't look too different from that of the ancient love bugs.
Sex hasn't changed much in the intervening years either. Modern froghoppers also like to mate face-to-face when clutching a small twig or shoot.
Side by Side
Modern froghoppers may also mate side by side if they are on a leaf or a tree trunk.
Tia Ghose, Senior Writer
Tia has interned at Science News, Wired.com, and the Milwaukee Journal Sentinel and has written for the Center for Investigative Reporting, Scientific American, and ScienceNow. She has a master's degree in bioengineering from the University of Washington and a graduate certificate in science writing from the University of California Santa Cruz.