Imagine enjoying a peaceful afternoon at home, when suddenly, you notice multiple flies buzzing around your windows and resting on your walls. These unwelcome visitors are none other than cluster flies. While these insects may resemble common house flies, they have distinct characteristics and behaviors that set them apart. In this blog, we will explore the fascinating world of cluster flies, from their life cycle to effective ways of managing and preventing their infestations.
1. Identification and Habits:
Cluster flies, scientifically known as Pollenia spp., are a unique species of flies that prefer to live outdoors but often seek shelter inside buildings as the cooler temperatures of autumn arrive. They vary in size from 6 to 10 millimeters and have a dull gray or blackish color. One distinguishing feature of cluster flies is the rough, golden hairs on their thorax.
2. Life Cycle and Behavior:
Cluster flies undergo a complete metamorphosis, consisting of four stages: egg, larva, pupa, and adult. The process starts as adult female flies lay their eggs in the soil, usually near earthworm burrows. After a few days, the eggs hatch into larvae, which feed on earthworms before pupating into adult flies. The entire life cycle takes approximately three to four weeks.
Cluster flies typically seek warm spaces during the colder months, such as attics, wall voids, and secluded corners of buildings. They aggregate in large numbers, hence the name "cluster flies." When temperatures rise in spring, these flies emerge and leave the buildings in search of their natural habitats.
3. Distinctions from House Flies:
Cluster flies are often confused with house flies due to their similar appearance. However, several key differences help distinguish them. Unlike house flies, cluster flies have a sluggish flight pattern and prefer to rest indoors on walls and window sills rather than actively seeking out food or garbage. Unlike house flies as well, cluster flies do not pose a significant health risk, as they do not carry disease-causing organisms.
4. Prevention and Control:
Preventing cluster fly infestations involves both exterior and interior control measures. Here are a few effective strategies:
- Seal entry points: Use caulk and weather-stripping to seal cracks and openings in walls, windows, and doors to prevent flies from entering your home.
- Install screens: Properly fitted screens on doors and windows will keep cluster flies, as well as other insects, from entering your living spaces.
- Maintain cleanliness: Regularly clean your property, eliminating potential food sources for flies and reducing their attraction to your home.
- Professional assistance: If infestations persist, consider seeking help from pest control professionals who can assess the situation and provide effective treatments.
Conclusion:
While cluster flies may be a frustrating presence in homes during the colder months, understanding their behavior and employing preventive measures can help you keep their unwelcome visits at a minimum. By sealing off entry points and maintaining cleanliness inside and outside your home, you can significantly reduce the likelihood of cluster fly infestations. Remember that these insects are harmless, so patience and a moderate approach to management can go a long way.
