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Nairobi fly

life science Maturity 5-7 Next article →

The Nairobi fly is a small beetle from East Africa. It is also called the Nairobi Eye. Some people call it a dragon bug. This beetle belongs to the genus Paederus. These insects are native to Tanzania. They are quite small and thin. Most adults are 6 to 10 mm long. They are only 0.5 to 1.0 mm wide.

The beetle has a very bright look. Its head and lower abdomen are black. The elytra, or wing covers, are also black. The thorax and upper abdomen are red. This makes the insect black and red. These beetles live in moist habitats. They like wet places to stay. They are often good for farms. This is because they eat pests on crops.

Sometimes many beetles appear at once. This is called an outbreak. Heavy rains can cause this. Events called El Niño can bring these rains. These rains help the beetles thrive. Large groups of beetles appeared in 1998. The beetles are attracted to artificial light. They fly toward lights at night. This brings them close to humans.

The beetle does not bite or sting. It carries a toxin called pederin. This substance is in its haemolymph. Haemolymph is the fluid inside the insect. Pederin is a corrosive substance. It can cause skin burns. This is called Paederus dermatitis. The liquid comes out if the bug is crushed. This often happens when people sleep. Someone might brush it from their face.

You should not crush the beetle on your skin. Instead, gently blow the insect away. You can also brush it off softly. This helps prevent skin irritation. Researchers study how to stop these attacks. A group at the University of Hyderabad studied this in 2024. They found that LED lights might help. Using these lights may stop the beetles. This is a new way to stay safe.

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