Cluster Fly
Pollenia rudis
FliesLarger than house fly with golden-yellow hairs on thorax. Overwinters in large numbers in attics and wall voids. Not a filth fly. Larvae are parasites of earthworms. Sluggish flier.
Control Methods
Recommended methods for controlling this pest
| Method | Type | Effectiveness | Requirements |
|---|---|---|---|
| Fly Bait Application | Chemical | Required |
Common Harborage Locations
Where to find this pest during inspections
| Location | Why Found There | Priority |
|---|---|---|
| Attics | Warmth in winter, nesting materials (insulation), minimal disturbance, entry from roof penetrations. | High |
| Window Frames | Gaps for entry, light attraction, temperature differences, collection of dead insects. | Medium |
Important Disclaimer: The information provided in this knowledge base is for educational and reference purposes only. Pest management professionals should always consult current product labels, Safety Data Sheets (SDS), manufacturer instructions, and applicable local, state, and federal regulations as the definitive source of truth. Product formulations, application methods, safety requirements, and regulations may change over time. This information may be out of date and should not replace professional judgment, proper training, or required licensing and certifications.