Ladybirds are similar in structure to a winged beetle. If you have visited our Beetle section, you will have discovered that winged insects have a covering over their wings for protection. This covering is called 'elytra'. When ladybirds fly, the 'elytra opens up to allow movement of the wings. When it is still, the 'elytra' closes up.
The head of a ladybird is very tiny, although the females head is larger than the males. The head is so tiny, it can sometimes be mistaken for the pronotum.