There are Two Types of Metamorphosis
Metamorphosis means change of form.
Holometabolous or also known as complete metamorphosis- There is a total four life stages, embryo, larva, pupa, and adult. (Wikipedia) The first stage is caused by fertilization of an egg, and once the larva hatches it's in its second stage. (Snodgrass 1954) The larva stage varies between insect species, flies are maggots, and species in the family Lepidoptera are caterpillar. During this phase larva are trying to accumulate a lot of energy from eating, so that it can enter into next stage very similar to hibernation. The pupa stage is when the insect makes a protective covering (cocoon) inside the cocoon the insect is preparing itself for the adult stage. Lastly, the adult stage- the insects leave its cocoon and have reproductive organs, and have wings. (Snodgrass 1954) Examples-butterflies, moth, and Brachycern flies (Bug Guide 2014
Metamorphosis means change of form.
Holometabolous or also known as complete metamorphosis- There is a total four life stages, embryo, larva, pupa, and adult. (Wikipedia) The first stage is caused by fertilization of an egg, and once the larva hatches it's in its second stage. (Snodgrass 1954) The larva stage varies between insect species, flies are maggots, and species in the family Lepidoptera are caterpillar. During this phase larva are trying to accumulate a lot of energy from eating, so that it can enter into next stage very similar to hibernation. The pupa stage is when the insect makes a protective covering (cocoon) inside the cocoon the insect is preparing itself for the adult stage. Lastly, the adult stage- the insects leave its cocoon and have reproductive organs, and have wings. (Snodgrass 1954) Examples-butterflies, moth, and Brachycern flies (Bug Guide 2014
Larva Pupa Adult
Hemimetabolous or also known as partial or incomplete metamorphosis - Juvenile stage look very similar to the adults, the only differences is that only in the adult stage are wings and genitalia present, during the other two stages they are lacking. (Snodgrass 1954) There are Three stages in the Hemimetabolous eggs, the immature stages, which are called nymphs, and lastly the adult stage. (Bug Guide 2014) The transition between each stage is done by molting for the insects gets too big for its own exoskeleton, so it sheds it off to form a new one. Examples, Grasshoppers, and Mayflies (Bug Guide 2014)
Ametabolous- A few insects are known to go through no changes during its developmental stages. (Snodgrass 1954)
example- silverfish
Ametabolous- A few insects are known to go through no changes during its developmental stages. (Snodgrass 1954)
example- silverfish