Biological Swarms

[Toroid]

Swarms of lovebugs hit Florida. The first link contains several videos.
Bug-pocalypse: Millions of Pesky Lovebugs Invade Florida - Geek.com
Lovebug - Wikipedia

www.youtube.com/watch?v=VkFHI99KBVA

 

[Toroid]

Mayfly swarm picked up on weather radar makes landfall, blanketing Northeast Ohio streets | Daily Mail Online

Port Clinton, Ohio, residents woke up to a city covered in mayflies Thursday

• The mayfly swarm had been spotted on Doppler radar Wednesday night

• The mayflies hatched in Lake Erie and were swarming during a mating frenzy

• One dramatic picture shows mayflies carpeting cars in a parking lot