Aquatic insects use a tracheal gill, which contains air tubes.

They send out the same signals the insects themselves are using.

Almost all insects and arachnids use both simple and compound eyes.

Many adult insects use six legs for walking and have adopted a tripedal gait.

Replies: Actually, insects use a lot of energy compared to their body weight.

In similar fashion, some social insects use quorum sensing to determine where to nest.

But many insects and animals use a sun compass.

The two different classes are not mutually exclusive, and insects may use combinations of the two.

Further studies showed that other insects also use cantharidin for protection.