I first noticed microfireflies on June 10, 2016, in Washington Square Park. I ended up writing about them in Leave Society, and they're depicted on the cover, though in real life they seem to be cloud-colored, not yellow. Below are all the mentions of them in my book. These passages are in third-person, about a character named Li, but they were written as nonfiction, based on my experiences.

From page 144:

Supine in Washington Square Park one day, Li saw flitting, epheme...