The press statement did not really say how those little crawlers got inside the Mazda's fuel systems but theories suggest that the spiders may have entered the fuel tank during assembly. The cars affected were built at Mazda's US plant and only affects the cars over there. These cars include Mazda 6 sold in the US, Canada, Mexico and Puerto Rico. Mazda also reports that there have been no accidents caused by these fuel system invasion.
Now for some National Geographic-like stuff for those interested in these little crawlies. The Yellow Sac spider or, as it is scientifically known, the Cheiracanthium is a species of spider from the Miturgidae family of arachnids. They are usually pale yellow in color around the abdomen area and its size ranges from 5 to 10mm. So it's pretty tiny. It is also a spider that can bite. A bite can cause a small lesion in humans and there could be a small risk of infection but its bite isn't one of those severe one that poisonous spiders like the female black widow which could kill a human. And you thought you'd never learn anything useful in an autoblog.
Imagine that, spiders in your fuel lines. How do they survive in the fuel lines and tank of a Mazda 6? What do they eat? Do they sip or guzzle RON92 or do they prefer higher octane?