Flying robot bugs have shown up before in books and movies. Soon they'll be for real. Via KurzweilAI:
"Unmanned aircraft maker AeroVironment has received an additional $5.4 million from DARPA to further develop a diminutive aircraft that can fly into tight spaces undetected, perch, and send live surveillance information to its handlers."
DARPA also funds a live flying bug experiment - a giant flower beetle with implanted electrodes and a radio receiver on its back can be wirelessly controlled to fly wherever the controllers decide. A cyborg beetle. Now that's creepy.