the.com/glowworm

a maggot that turned hunger into a constellation and called it dinner.

means A beetle larva or wingless female beetle that produces a soft greenish light from its abdomen, typically seen glowing in dark grass and hedgerows at night.

from A plain compound of "glow" and "worm," both ancient Germanic words. "Glow" comes from Old English "glowan," to shine with heat, while "worm" descends from Old English "wyrm," which once meant any creeping or crawling creature — including serpents, dragons, and insects, not just earthworms. So the name simply means "a creeping thing that glows." The creature is no worm at all, but the older, broader sense of "wyrm" caught it before science could correct the slander.

not a worm
Actually a beetle larva or fungus gnat, mislabeled forever
cold light
Bioluminescence wastes almost no energy as heat
deadly lures
Cave species dangle sticky glowing threads to trap prey
mating signal
Females glow to summon flying males in darkness
blue glow
New Zealand caves shimmer like fallen night skies
for instance

lampyris noctiluca — european firefly larva, produces bioluminescent light in southern england and throughout temperate europe

arachnocampa species — new zealand glowworms that create sticky silk threads in caves like waitomo caves, auckland

phrixothrix hirtus — brazilian railroad worm with dual photophores producing red and green light simultaneously

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