Stinging insect allergies, or hymenoptera venom allergies, are allergic reactions triggered by the venom injected into the skin when a person is stung or bitten by certain insects. The most common culprits are bees, wasps, hornets, yellow jackets, and ants. While most people experience localized pain, swelling, and redness at the site of a sting, individuals with stinging insect allergies can have severe and potentially life-threatening reactions.