Image showing crop or honey stomach (nectar or honey receptacle), ventriculus or stomach (food processing), malpighian tubules (kidneys, filters nitrogenous waste), pyloric valve (regulates movement of food material from stomach to intestine), intestine (nutrient absorption), rectum (waste receptacle), sting apparatus, venom sac (poison gland), sting gland (acid gland, consists principally of formic acid).