Insects Use Static Electricity

One interesting fact about the insect world is that there is no common thread connecting how each insect gets its food. You might think that if all bugs had a common origin, they would show strong similarities, with some bugs being superior because they are more highly evolved. Diversity maintains balance in the insect world, preventing any one insect from dominating. Recent studies have shown that insects use static electricity in various ways.

Some parasitic nematodes, tiny worms about the size of a pinpoint, use static electricity to jump 25 times their body length to land on a flying insect. We’ve all seen insects being blown by the wind, but what most of us haven’t noticed is the role of static electricity. A little physics helps explain why static electricity can influence nematode aerial movements. Coulomb’s Law includes a constant that describes the strength of static electricity. The gravitational constant is 6.67 x 10^-11, while the Coulomb constant is 9 x 10⁹, making the static electrical force 10²⁰ times stronger than gravity.

When a flying insect flaps its wings, it generates a positive charge. The nematodes can use this charge to leap through the air and attach to the insect, where they lay their eggs. The faster the insect beats its wings, the stronger the positive charge, and the easier it is for the nematodes to attach.

Static electricity helps many insects in various ways. Bees can sense electric fields around flowers and use them to guide their foraging. Spider webs deform toward positively charged flying insects, trapping them. Ticks are attracted by the static electricity in the fur coats of animals. Researcher Sam England expects to find that electrostatic effects “play countless roles throughout the natural world.”

The complexity of Earth’s biosystem is immense and hard to explain as a product of blind chance. God’s creative genius is evident in the very large, but is especially clear when we study the very small.

— John N. Clayton © 2026

Reference: “Static Launch” in the January 2026 issue of Scientific American (pages 18-19) and scientificamerican.com