larva
UK: ˈlɑːvə | US: ˈlɑːrvə
n. the immature, wingless, and often wormlike feeding form of insects and other animals that undergoes metamorphosis (e.g., caterpillars, maggots).
The word "larva" originates from Latin, where it literally meant "ghost" or "mask." This metaphorical usage reflects the ancient belief that the immature form of an insect was a "masked" or hidden stage before its transformation into the adult. Over time, the term evolved in scientific contexts to specifically denote the developmental stage of insects and other metamorphosing organisms. The logic behind this progression lies in the idea of the larval stage being a "disguised" or transitional phase before the final form emerges.
The larva of a butterfly is called a caterpillar.
Mosquito larvae develop in stagnant water.
The scientist observed the larva under a microscope.
After hatching, the larva feeds voraciously before pupating.
Some fish species rely on insect larvae as their primary food source.