Larger than light lighting11/6/2023 ![]() That’s because flying insects are attracted to the UV radiation from the sun. A moth or fly inside a building tends to hover near windows during the daylight hours. You can see an insect’s attraction or positive phototaxis towards UV light in action in the real world. Its short wavelengths are not visible to humans. The full UV light spectrum (400-10 nm) sits outside the Visible Light Spectrum. We’ve established that bugs can see a portion of UV light (300-400 nn range). A sunset-like or yellow-orange bulb, like our A15 LED Yellow Bug Light Bulb can attract less bugs than a blue light bulb might do.īugs like moths or flies are drawn to certain types of lights not only because their light wavelengths are visible within a bug’s range of vision, but also bugs are affected by generated heat and the emission of UV light.Īre bugs attracted to UV lights? What about heat? You can discourage attraction to your exterior light bulbs above a patio table or other dining space, where you might relax in the evenings outside, by using a warm light quality LED that is outside the range of vision of most flying insects. Negative Phototaxis – movement away from a light source.Positive Phototaxis – attraction/movement to a light source.Here are two ways bugs are affected by light stimulus (there are many others): Don’t worry, we won't do a deep dive into science. Wavelengths higher than 550 nm can affect phototactic response per scientific studies of moth behavior. When light transmission wavelengths are greater than 550 nm, like the sunset-like range of deep yellow to orange-red, the sensitivity of a bug’s range of vision can come into play. They do not see the warmer colors beyond yellow wavelengths and are therefore not as attracted to yellow-orange LED light bulbs (compared to blue light bulbs or fluorescent lights), because they cannot see them as those colors are on the edge of a bug’s range of vision. ![]() (You can learn more about Understanding the Visible Light Spectrum and Color in our blog post.)Īs you can see above, bugs perceive wavelengths of light from approximately 300 to 650 nanometers. Humans can see the entire Visible Light Spectrum (~380-750nm), but not the full UV light spectrum. Insects see a smaller portion of the Visible Light Spectrum than humans. We will uncover how that works in this blog.Īre bugs less attracted to yellow light bulbs than blue light bulbs? ![]() To be clear, these yellow bug bulbs are not a pesticide or one of those annoying bug zappers. You are probably familiar with the phrase “like a moth to a flame,” but did you know that a brief understanding of a flying insects’ attraction to light can help you with your pest management? Sunco Lighting LED Yellow Bug Lights offer a simple and appealing solution to deterring bugs at doorways and near outdoor dining areas without the use of harmful chemicals.
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