do cockroaches have teeth

do cockroaches have teeth
Cockroaches have no teeth. They also don’t have chewing mouthparts (mandibles) like most other insects. This makes it seem as though they can’t eat anything but the occasional crumb of bread. How, then, do cockroaches eat? The answer is that they show great diversity in how they cope with an inability to chew food. If you look closely at a cockroach’s mouth, you’ll see two small pits near its front end: These are the vestigial gnathal pits found in many insects that are remnants of chewing mouthparts that have shrunk over time. Cockroaches may not have teeth, but their jaw has evolved to chew up food. It does this through two different strategies: First, instead of mandibles for chewing, cockroaches have what is called a pre-masticatory groove on the inside of their upper jaw. Second -> Instead of having one pair of mandibles that move together to break up and grind food, cockroaches have six pairs of tiny protrusible maxillae that can shoot forward and almost double the surface area available for chewing food both before and after it enters their actual mouth. A cockroach will first use its maxillae to cut up any large pieces of food into smaller fragments or even seeds or grains. They will then use the grooved surface on the interior of its jaws to mash and grind those fragments until they are broken