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Insect Bodies - Structures and Functions of the Insect Body

Insect bodies are more complex than one might think. Like us, insects require body systems to function: respiratory, nervous, circulatory, and digestive. These articles detail the different organs and structures that make the insect a functional, living thing.

Insect Wing Venation Diagram
When using a dichotomous or descriptive key to identify an insect, you may need to examine the pattern of the wing veins and cells. This diagram explains the terminology used to describe insect wings, and illustrates the location of each wing vein and cell.

The Parts of a Butterfly
Whether large (like a monarch butterfly) or small (like a spring azure), butterflies share certain morphological features. This diagram highlights the basic common anatomy of an adult butterfly or moth.

The Parts of a Caterpillar
Caterpillars come in many colors, shapes, and sizes. Some caterpillars are quite hairy, while others are smooth. Regardless of these varied features, all caterpillars share certain morphological features. These common features are labeled and described in this caterpillar diagram.

Internal Anatomy of an Insect
Though tiny, the insect body contains organs and structures that control its vital life functions. In this article, you can see each of the insect systems - nervous, digestive, circulatory, excretory, reproductive, and respiratory - and learn the names and functions of each part.

Can Insects Hear, and How?
Most insects can hear, and use sounds to communicate and to navigate their environment. There are four types of insect auditory organs.

How Respiration Works in Insects
Insects require oxygen to live, and produce carbon dioxide as a waste product, just as we do. Insects, don't have lungs, so how do insects breathe?

Insect Brains Do Insects Have Brains?
Insect Brains Do Insects Have Brains?

Insect Larval Forms
If you need to identify an insect larva, you will first need to recognize its larval form. There are 5 types of insect larvae, differentiated by body form.

Insect Pupal Forms
Entomologists describe insect pupae using unusual terms: obtect, exarate, coarctate, decticous, and adecticous. Learn about these 5 types of insect pupae, and which terms apply to which insect orders.

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