Bombus Affinis Research Paper
Bombus affinis do not have an internal skeleton, but poses an exoskeleton; an exoskeleton is a hard-outer shell that provides support and protection. The exoskeleton also helps to regulate water loss and limit the size of insect growth. The exoskeleton is made up of a composite called chitin. Chitin is a chemical relative of glycogen and cellulose. The exoskeleton is made up of three parts called the epidermis, basement membrane, and the cuticle. The cuticle is the part of the exoskeleton where most chitin concentrations occur. Bumblebee wings are formed of the same material as the rest of the exoskeleton; bumblebees have four wings with the two rear wings being small and usually attached to the front wings by a row of hooks. This occasionally