Do All Insects Breathe Through Spiracles?

Insects breathe in and out through holes, called spiracles, all over their bodies. Some insects close the holes now and then. Scientists had thought maybe they stopped breathing to limit water loss or to adapt to environments loaded with carbon dioxide, but no solid evidence supported either idea.

Do all insects have spiracles?

Air enters the insect's body through valve-like openings in the exoskeleton. These openings (called spiracles) are located laterally along the thorax and abdomen of most insects — usually one pair of spiracles per body segment.

Which insects breathe through spiracles?

While exhaling, carbon dioxide is carried by trachea and expelled through spiracles. Insects like cockroaches breathe through spiracles located in different areas of their tiny body. 3.