Talk:Centipede Physiology/@comment-24053170-20181002013603/@comment-3045936-20181002015514

Just adding on. Insect don’t have blood as we understand. The Hemolymph isn’t capable of transporting oxygen, thus it isn’t red. Even if you crush something like a mosquito, any red blood is just what they took from someone or thing.

Insects have blood in some scene, but it is not used to carry oxygen. Instead, the oxygen is distributed in the body through an elaborate system of tubes and air sacs. Thus insects does not have hemoglobin and is not red lacking oxygen and red blood cells. In general insects blood is either colorless, pale yellow or green. So insect have something akin to blood and is called blood for simplified sake. As it’s a necessary for insects. However it’s cellular/chemical etc make up is different from the red blood found in mammals, I believe inside most reptiles, birds, and fish. Thus insects don’t have blood in the traditional scene.