Walnut Husk Fly vs Window Fly
Side-by-side species comparison
| Attribute | Walnut Husk Fly | Window Fly |
|---|---|---|
| Scientific Name | Rhagoletis completa | Scenopinus fenestralis |
| Order | Diptera | Diptera |
| Family | Tephritidae | Scenopinidae |
| Size | 5-7 mm | 5-7 mm |
| Habitat | Orchards | Indoors |
| Diet | Fruit Feeders | Predators |
| Regions | North America, Southern Europe | Worldwide |
| Conservation | Least Concern | Least Concern |
Walnut Husk Fly
A fruit fly whose larvae feed inside walnut husks, staining and damaging the nuts. It has become an invasive pest in European walnut-growing regions.
Did You Know?
Larval feeding stains walnut shells black, making them unmarketable even though the nut inside may be fine.
Window Fly
A small shiny black fly often found on windowsills inside buildings. Its larvae are beneficial predators of carpet beetle and clothes moth larvae.
Did You Know?
Despite being found indoors, it is actually beneficial because its larvae eat destructive carpet beetles.