The German company, Festo, has a history of making incredible, biomimetic robots in their laboratories. We have featured kangaroos, dragonflies, and jellyfish in the past. They’ve also made Air-Penguins, Air-Ray, robotic birds, and the Airacuda. The butterfly may seem less ambitious than those efforts, but the butterflies can swarm in the air while avoiding collisions.
Each butterfly weighs a little over an ounce and has a wingspan of 20 inches. They consist of nothing more than a couple of motors, batteries, infrared markers, and soft, elastic wings.
The robots were not developed to sell but represent continued research efforts towards making ultralight, networked robotics systems. I think the company should focus on these creations and move them to market. I want one!
You can read more about the specs here.