New Zealand Glowworm

Arachnocampa luminosa · Insect

New Zealand Glowworm
New Zealand glowworm threads in the dark · Alan Rockefeller, CC BY 4.0, Wikimedia Commons

The larva of a fungus gnat found only in New Zealand, on both islands, in caves and on damp, sheltered banks in the native bush. Growing to 3 or 4 cm, it spins a silk nest on a cave ceiling and hangs down up to 30 threads beaded with sticky droplets; its blue-green glow lures midges and other small flies into them, and it hauls them up and eats them alive. Neighbouring larvae match their glow to one another, making the display brighter, and the caves of Waitomo, Waipu and Te Ana-au draw tourists to see it. The first written record, in 1871, came from a gold mine in the Thames region.

Danger
Harmless
How it is met
In colonies, day and night
Size
Tiny
In winter
Active in winter

Where it lives

Temperate Forest, Cave

Sources

Open it in Biomes — MGS Toolbox