![Faine Greenwood on Twitter: "The "iridovirus" forms crystals underneath a pillbug's shell, which causes the striking color change. It does not infect vertebrates, so we are safe. https://t.co/n0XfbsvZKa https://t.co/XazjriF61A" / Twitter Faine Greenwood on Twitter: "The "iridovirus" forms crystals underneath a pillbug's shell, which causes the striking color change. It does not infect vertebrates, so we are safe. https://t.co/n0XfbsvZKa https://t.co/XazjriF61A" / Twitter](https://pbs.twimg.com/media/Div-wFGW0AIsSV8.jpg)
Faine Greenwood on Twitter: "The "iridovirus" forms crystals underneath a pillbug's shell, which causes the striking color change. It does not infect vertebrates, so we are safe. https://t.co/n0XfbsvZKa https://t.co/XazjriF61A" / Twitter
![Faine Greenwood on Twitter: "BUT BACK TO LAND-DWELLING GIANT ISOPODS. The variety you're likely to see in your North American yard is called Armadillidium vulgare, and they're native to Europe: they have Faine Greenwood on Twitter: "BUT BACK TO LAND-DWELLING GIANT ISOPODS. The variety you're likely to see in your North American yard is called Armadillidium vulgare, and they're native to Europe: they have](https://pbs.twimg.com/media/Div13c6UEAUX6Sm.jpg:large)
Faine Greenwood on Twitter: "BUT BACK TO LAND-DWELLING GIANT ISOPODS. The variety you're likely to see in your North American yard is called Armadillidium vulgare, and they're native to Europe: they have
![Thread by @faineg: "HERE ARE SOME FUN FACTS, IN NO PARTICULAR ORDER, ABOUT THE PILLBUG/WOODLOUSE/POTATO BUG/ROLY-POLY/DOODLEBUG/WOW, WHO KNEW THESE THINGS HAD S […]" Thread by @faineg: "HERE ARE SOME FUN FACTS, IN NO PARTICULAR ORDER, ABOUT THE PILLBUG/WOODLOUSE/POTATO BUG/ROLY-POLY/DOODLEBUG/WOW, WHO KNEW THESE THINGS HAD S […]"](https://pbs.twimg.com/media/Divy1bIUwAAtlyZ.jpg)