The body of a jumping spider, in outline, appears like this:
Note that there are eight eyes, four in front and four on top.
The body is divided into two main parts, the posterior of which is
the opisthosoma or abdomen, shown in blue:
The spinnerets are shown in red. These are the silk-producing appendages. Jumping spiders, although they do not usually use silk to catch prey, use silk for other purposes (draglines, nest making).
The anterior body part is the prosoma or cephalothorax. It is covered
above by a shell or carapace:
Belonging to the prosoma are the main appendages:
In this diagram the chelicerae (jaws with fangs) are shown in red, the palpi in green, and the legs in blue.
Jumping spider anatomy pages: