Insects often hang upside down when flies die. Because it’s not easy for a dead insect to stand up straight. When they die, their legs cannot support the weight and they fall. their backs, the heaviest part of their bodies touches the ground.

Because the surface volume of the back parts is large When the insect falls in this way, it remains in the air with its legs up. This is not the case for some insect species whose body length is greater than width, they can fall sideways.

This is more common when they die from pesticides.

Consists of the brain, spinal cord and all nerves of the body nervous system† It controls everything that is done, including thinking, walking, feeling, breathing. Medicines disrupt the nervous system of insects, causing them to have convulsions. Meanwhile, they raise their legs uncontrollably and stand motionless on their backs. When their nervous system doesn’t work, all the synchronized features of their legs disappear.

So why do spiders curl up into balls when they die?

found on spider legs flexorspulls the legs in. But there are no extensors to open the legs. To do this, they use blood pressure, just as the penis swells as it fills with blood. Legs that cannot swell with blood after death, therefore, contract.

Spiders have a fluid called hemolymph in their circulation. The heart pumps this fluid throughout the body. Spiders don’t have capillaries like humans. hemolymph, gaps flows into spaces called cavities and tissues are covered with this fluid; so they are fed. Then, thanks to the pressure, this fluid returns to the heart.

Sources: Live Science, IFL Science