
These elusive #insects glow electric blue—and are only found in Appalachia https://www.nationalgeographic.com/animals/article/appalachian-glowworms-blue-bioluminescence
"the larval form of a fungus gnat O. fultoni, they produce the bluest #bioluminescence of any #insect... translucent, around 11 mm in length, with lanterns at both ends, they produce gauzy webs, and it has been theorized that their light is intended to lure flying insects. When #glowworms are concentrated, they turn roadsides and riverbanks into brilliant blue rivers that sparkle after sunset"