The thorax
the thorax, on the section called the mesothorax
an insect has 6 legs
These could be legs or antennae.
Not true-- Insects have only six legs.
The head is the first part, with antennae, eyes and mouthparts. The thorax is the middle, with the legs and wings if the insect has them, and containing the muscles to use them. The third part is called the abdomen, with no appendages. This part houses the internal organs.
an insect has 6 legs
A bug that has 3 body parts and 6 legs and antennae is called an insect. The insect you're talking about with a striped lower Body Part is probably a bee, or a wasp.
Insects only have 6 legs. As spiders have 8 legs, they are part of the arachnid family.
An insect has 3 pairs of legs (6 legs) and an exoskeleton.
A spider has 8 legs. That is why it is technically not an insect (an insect has 6 legs).
A butterfly is an insect because it has 6 legs, Insects have six legs.
EVERY SINGLE INSECT!! Spiders aren't insects because they have 8 legs. :-)