Information

Insect Classification



Book Moth: Example of Ametabolic Insect

Introduction

Insects can be classified according to the type of development they exhibit during their lifetime.

Ametabolic Insects

They are insects that during the whole life do not present physiological changes, that is, the process of metamorphosis does not occur. The insects that hatch (hatch from eggs) are similar in shape to adults.

It is worth remembering that the exchange of exoskeleton (moulting), verified in many species of ametabolic insects, does not characterize transformation.

Example: Book Moth

Hemimetabolic Insects

They are insects that present an incomplete process of metamorphosis. From the egg hatches a nymph (young form) that is slightly different from the adult insect, as it has no wings and no developed sexual system. With the occurrence of seedlings, the insect undergoes some transformations, originating the imago (adult form). The adult insect will have developed sexual organs as well as wings. Example: grasshopper, cricket, cicada, termite and cockroach.

They are insects that present an incomplete process of metamorphosis. From the egg hatches a nymph (young form) that is slightly different from the adult insect, as it has no wings and no developed sexual system. With the occurrence of seedlings, the insect undergoes some transformations, originating the imago (adult form). The adult insect will have developed sexual organs as well as wings.

Example: grasshopper, cricket, cicada, termite and cockroach.

Holometabolic insects

They are insects that present complete metamorphosis in their development. In this way, the adult insect is totally different from the larva because it undergoes profound transformations.

Examples: butterfly, fly, bee and beetle.

Curiosities (about the origin of words):

- The term amethable is of Greek origin, where: The means no and metabols means change.

- The term hemimetabole is of Greek origin, where: hemi means half and metabols means change.

- The term Holometábolo is also of Greek origin, where: holo means total and metabols means change.

- The science that studies insects is known as entomology.