The order Hymenoptera include honey bees, yellow jackets, yellow hornets, white-faced hornets,wasps, and fire ants. Africanized hornets bees, also know as killer bees, are a concern because of their aggressive behavior and excessive swarming, not because their venom is more toxic. Rerely, patient sensitized to reduvid bugs (also know as kissing bugs) may have episodes of nocturnal anaphylaxis. Lepidopterism refers to adverse effects secondary to contact with larval or adult butterflies and moths. Salivary gland antigen are responsible for immediate and delayed skin reaction in mosquito sensitive patient.