Tags: Disease.
Many species of arthropods (insects arachnids and others) regularly or occasionally bite or sting human beings. Insect saliva contains anticoagulants and enzymes that cause local irritation and allergic reactions. Insect venoms can be delivered by their stingers which often are modified ovipositors or by their mouthparts. Insect spider and scorpion venom can cause serious injury or death.