The cave is 30 million years old in New Zealand

The fireflies on the 30 million-year-old limestone cave in New Zealand sparkle with light, making observers feel like standing under the starry sky.

Josehp Photographer Michael recorded a sparkling blue light in limestone caves deep underground in North Island, New Zealand, reported Business Insider on November 7.According to experts, this cave is dated to 30 million years old.The ceiling is lit by the fireflies of New Zealand whose scientific name is arachnocampa luminosa.

This firefly is the larva of the fungus gnat, a mosquito-like fly. Fireflies arachnocampa luminosa are found in New Zealand and eastern Australia. "Arachanocampa" means "spider mite" because they use silk nets to catch prey.

Cave cave with wet surface is a great shelter for larvae.They often focus on groups of hundreds lying side by side.

Fireflies use light to attract other insects as prey.They cannot be seen with the naked eye when light shines in the cave.

Fireflies work at night.Many people describe observing them as standing under a starry sky in a clear night.

When they feel disturbed, insects can stop their bioluminescence.They can temporarily turn off the light for about 15 minutes when the presence of torch, smoke or insecticide.

The beauty of fireflies is very short.They only live in enough time to mate and lay eggs.A firefly lays about 130 eggs and dies shortly after.

About three weeks later, the eggs hatch into larvae.The larval stage takes up most of the time in the firefly's lifespan, lasting about 6-12 months.The larva has a soft body, except for the head shell.When they are larger than this shell, the larvae begin to molt.This process takes place continuously in its life cycle.

After finishing the larval stage, they grow into pupae and hang on a short filament from the cave arch in about 1-2 weeks.

Adult fireflies fly very poorly, so they often cling to a certain area and form a herd.