Insects can die in many different positions

Death lying on its back 1

If a fly dies in the air, due to pesticides, old age, etc., it will often fall down on its back. Such landing is due to the fact that the fly's centre of gravity is at the top of the body, making it flip over, but that is not always the case.

Death lying on its side 2

When the fly dies, it usually folds its legs under its body, making the body tilt. If the wings are slightly spread, they will make the fly end up on its side rather than on its back.

Convulsive death 3

Insects, which are attacked by parasites, show a flustered behaviour, that makes them die in incredible positions. They often die in positions and places which allow the disease organisms to spread and infect other insects.