Stinger
A stinger, or sting, is a sharp organ found in various animals (typically arthropods) capable of injecting venom, usually by piercing the epidermis of another animal.
An insect bite or sting is a break in the skin or puncture caused by an insect and complicated by introduction of the insect's saliva, venom or excretory products. Specific components of these substances are believed to give rise to an allergic reaction, which in turn produces skin lesions that may vary from a small itching wheal, or slightly elevated area of the skin; to large areas of inflamed skin covered by vesicles and crusted lesions.