Tundra Robber Fly vs Sheep Ked

Side-by-side species comparison

Attribute Tundra Robber Fly Sheep Ked
Scientific Name Rhadiurgus variabilis Melophagus ovinus
Order Diptera Diptera
Family Asilidae Hippoboscidae
Size 10-15 mm 4-7 mm
Habitat Beaches & Coastal Farmland
Diet Herbivores Blood Feeders
Regions Scandinavia, Finland, Scotland, northern Russia Cosmopolitan - worldwide where sheep are raised
Conservation Least Concern Least Concern

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.

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Did You Know?

This robber fly catches prey in midair and injects digestive enzymes to liquefy the insect's insides before drinking them.

Sheep Ked

A completely wingless, tick-like blood-sucking fly that lives permanently in sheep wool. Its flattened body and strong claws allow it to cling firmly to wool fibers.

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Did You Know?

Despite being called a ked or tick, it is actually a true fly that has completely lost its wings through evolution.