- Fireflies
Fungus 
Fireflies used her flash for two utilities:
The glowning
insects use the flash as a courtship signal. In each species, males and
females identify members of the opposite sex based on the flash timing.
In this group of insects flashing serves an additional utility. Firefly female can imitate the flash signal given by others species females, using this false signal, these predatory females are able to lure males, then eat them.
The firefly
lantern is located on the ventral abdominal surface beneath translucent
cuticle. The luciferin-luciferase light producing reactions are confined
to peroxisomes localed centrally in photocytes. The photocyte mitochondria
are found in the peripheral cytoplams, concentrated especially at
locations proximal to the trachea and tracheoles.
