Larva/ˈlɑːrvə/ Definition 1 of 3Pro Tip 1/3Transformation Stage Larva describes a transformation phase where an organism will drastically change its form. The larva transforms into a beetle after pupation. Pro Tip 2/3Not Just Insects While commonly associated with insects, 'larva' can refer to early forms of other animals too. Frog eggs hatch into swimming tadpole larvae. Pro Tip 3/3Growth Indicator Use 'larva' to indicate an organism is in its growth phase before reaching maturity. The larva stage is crucial for an insect's development.