What are the flies that are attracted to light?
Flies, those tiny yet often pesky insects, have long been a subject of fascination and study. One peculiar behavior that has intrigued scientists and laypeople alike is the phenomenon of flies being attracted to light. But what exactly are the flies that are attracted to light, and why do they exhibit this peculiar behavior? In this article, we will delve into the world of these light-seeking insects and explore the reasons behind their attraction to light.
The most common flies that are attracted to light are the family of nocturnal insects known as Psychodidae, commonly referred to as drain flies or moth flies. These flies are often found near light sources, such as windows, doors, and outdoor lights, where they can be seen buzzing around in swarms. Drain flies are typically small, measuring about 1/8 to 1/4 inch in length, and have a slender, elongated body.
The attraction of drain flies to light is primarily due to their biological clock, which is influenced by the circadian rhythm. These flies are most active during the evening and night, when the light levels are low. The light serves as a beacon for them, guiding them towards areas where they can find food and mates. Drain flies are attracted to the warmth and the UV light emitted by artificial light sources, which mimics the natural light of the moon and stars.
Another group of flies that are attracted to light are the family of Calliphoridae, which includes several species such as the common housefly and the blowfly. These flies are also nocturnal and are attracted to light for similar reasons as drain flies. They are attracted to the warmth and UV light emitted by light sources, which helps them locate food sources such as decaying organic matter.
The attraction of flies to light is not only limited to nocturnal species. Diurnal flies, such as the common housefly, are also attracted to light, although their attraction is not as strong as that of nocturnal flies. The reason behind this attraction is believed to be related to the foraging behavior of these flies. When flies are foraging for food, they rely on their sense of smell to locate potential food sources. Light can help them navigate and detect food sources from a distance.
The attraction of flies to light has practical implications as well. Insect traps, such as light traps, are commonly used to control fly populations. These traps utilize the flies’ attraction to light to lure them into a trap, where they are captured or killed. Light traps are effective in reducing the number of flies in and around homes, making them a popular choice for pest control.
In conclusion, the flies that are attracted to light are primarily nocturnal insects, such as drain flies and blowflies, which are drawn to the warmth and UV light emitted by light sources. This attraction is influenced by their biological clock and foraging behavior. Understanding the reasons behind this behavior can help us better manage and control fly populations, making our living environments more comfortable and hygienic.
