The male can usually be distinguished from the female by the long hairs on the end of the abdomen.

At the end of the abdomen there are simply two cerci.

Males have a single unpaired plate at the end of the abdomen.

It has two short pinkish projections on the end of the abdomen.

At the end of the abdomen are the reproductive organs.

It is attached to an object by tiny hooks on the end of the abdomen.

Usually the females have a large tuft at the end of the abdomen.

The third pair is at the end of the abdomen.

It has a very long, black horn on the end of the abdomen.

On the end of the abdomen there is a red mark in adults.