Cloudless Sulphur vs Tundra Robber Fly
Side-by-side species comparison
| Attribute | Cloudless Sulphur | Tundra Robber Fly |
|---|---|---|
| Scientific Name | Phoebis sennae | Rhadiurgus variabilis |
| Order | Lepidoptera | Diptera |
| Family | Pieridae | Asilidae |
| Size | 54-80 mm wingspan | 10-15 mm |
| Habitat | Beaches & Coastal | Beaches & Coastal |
| Diet | Nectar Feeders | Herbivores |
| Regions | North America, Central America, South America | Scandinavia, Finland, Scotland, northern Russia |
| Conservation | Least Concern | Least Concern |
Cloudless Sulphur
Large unmarked lemon-yellow butterfly; females may have faint spots. Common and conspicuous across the southern United States.
Did You Know?
Large fall migrations of thousands can be seen streaming southward along the Atlantic coast.
Tundra Robber Fly
A medium-sized robber fly with a dark body and distinctive bristly face. It is an aerial predator that ambushes other flying insects from perches on rocks and low vegetation. Adults have powerful grasping legs.
Did You Know?
This robber fly catches prey in midair and injects digestive enzymes to liquefy the insect's insides before drinking them.