#13. An Introduction

Insects.

The word Insect is derived from the Latin Insectum. The insect’s body is divided in to three sections viz the head, the thorax and the abdomen. It has three pairs of jointed legs, two antennae and two compound eyes.

A compound eye may consist of thousands of individual photoreceptor units. The image perceived is a combination of inputs from the numerous individual “eye units”- which are located on a convex surface, thus pointing in slightly different directions.

Compared with simple eyes, compound eyes possess a very large view angle, and can detect any fast movement. Now we know why it is so difficult to kill an insect by hitting it!

Insects form the most diverse group of animals. More than a million species are known to exist. More than half of all living organisms are insects. They exist in every kind of environment. But only very few are known to live in the ocean.

In this thread we will just look at some of the most weird and interesting insects- each one very special in some way or the other.

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