![Local News: Mystery of those pesky corn flies? Experts don't even know why they're swarming (8/9/16) | Greencastle Banner Graphic Local News: Mystery of those pesky corn flies? Experts don't even know why they're swarming (8/9/16) | Greencastle Banner Graphic](https://www.bannergraphic.com/photos/26/50/49/2650490-L.jpg)
Local News: Mystery of those pesky corn flies? Experts don't even know why they're swarming (8/9/16) | Greencastle Banner Graphic
![Fig 4. Thrips, Neuropteris or Thunderbugs or Thunderflies or Storm flies or thunderblights or corn lice, vintage engraved illust Stock Vector Image & Art - Alamy Fig 4. Thrips, Neuropteris or Thunderbugs or Thunderflies or Storm flies or thunderblights or corn lice, vintage engraved illust Stock Vector Image & Art - Alamy](https://c8.alamy.com/comp/EW9MXA/fig-4-thrips-neuropteris-or-thunderbugs-or-thunderflies-or-storm-flies-EW9MXA.jpg)
Fig 4. Thrips, Neuropteris or Thunderbugs or Thunderflies or Storm flies or thunderblights or corn lice, vintage engraved illust Stock Vector Image & Art - Alamy
![All you need to know about the annoying little insects swarming in the Grimsby area right now - Grimsby Live All you need to know about the annoying little insects swarming in the Grimsby area right now - Grimsby Live](https://i2-prod.grimsbytelegraph.co.uk/news/article1816037.ece/ALTERNATES/s615b/0_thunderbugs.jpg)