Cluster Fly vs Box Tree Moth
Side-by-side species comparison
| Attribute | Cluster Fly | Box Tree Moth |
|---|---|---|
| Scientific Name | Pollenia rudis | Cydalima perspectalis |
| Order | Diptera | Lepidoptera |
| Family | Calliphoridae | Crambidae |
| Size | 8-10 mm | 35-45 mm wingspan |
| Habitat | Gardens | Gardens |
| Diet | Parasites | Wood Feeders |
| Regions | Europe, North America | Native to East Asia; invasive in Europe and North America |
| Conservation | Least Concern | Least Concern |
Cluster Fly
A medium-sized, dark gray fly with golden-brown hairs on the thorax. In autumn, it gathers in large clusters inside buildings to hibernate, sometimes in the thousands.
Did You Know?
The larvae of this fly are earthworm parasites, burrowing into the worm through its skin and consuming it alive from the inside over several weeks.
Box Tree Moth
A white moth with iridescent brown wing borders that has become one of Europe's most destructive invasive species. Its caterpillars can completely defoliate ornamental boxwood hedges.
Did You Know?
Since arriving in Europe around 2007, it has devastated centuries-old boxwood gardens across the continent.