Figure 1. Sting of the Fire Ant (Solenopsis). Panel A shows the fire ant with body arched, stinging and injecting venom through the stinger (a modified ovipositor) in its distal abdomen (x30). Panel B is a scanning electron micrograph of the stinger (x90). Panel C shows the wheal-and-flare response that occurred 10 minutes after envenomation (x30); it is often accompanied by a severe burning sensation. The scale is in millimeters.
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