Cluster flies are common pests known for gathering in large numbers, especially during colder months. Unlike typical house flies, they are larger, golden-brown, and slightly furry. While they don’t pose health risks, their presence can be a nuisance.
Key Characteristics:
- Larger than house flies with a golden-brown color
- Furry appearance
- Seek warmth, often clustering in attics and secluded spaces
Management Tips:
- Seal entry points to prevent infestations
- Use pest control measures for effective removal
- Understand their behavior for better prevention
History of Cluster Flies
Cluster flies, scientifically known as Pollenia rudis, have a long history in the northern hemisphere, particularly in Europe and North America. They are believed to have evolved in the cooler climates of these regions, adapting to seek shelter during colder months. Unlike house flies, which are associated with human habitats and waste, cluster flies primarily lay their eggs in soil and are often found near agricultural areas, particularly where earthworms are abundant, as their larvae feed on them. Over time, their behavior of clustering in buildings during winter has made them a common nuisance in homes and businesses.
Key Historical Points:
- Originated in Europe and spread to North America
- Adapted to cooler climates, seeking shelter during winter
- Larvae feed on earthworms, influencing their presence near agricultural areas
Additional Facts:
- First documented in the 19th century
- Often mistaken for house flies due to their size and appearance
- Their clustering behavior leads to seasonal infestations in buildings