Deer Ked vs Ensign Wasp

Side-by-side species comparison

Attribute Deer Ked Ensign Wasp
Scientific Name Lipoptena cervi Evania appendigaster
Order Diptera Hymenoptera
Family Hippoboscidae Evaniidae
Size 5-7 mm 5-7 mm
Habitat Woodlands Woodlands
Diet Blood Feeders Parasitoids
Regions Europe, Asia, introduced to North America Africa, Asia, North America, South America
Conservation Least Concern Least Concern

Deer Ked

A flattened, reddish-brown blood-sucking fly that sheds its wings upon finding a deer host. It clings tenaciously to the hair with strong claws and feeds on blood throughout its life.

💡

Did You Know?

After landing on a host, it breaks off its own wings permanently, spending the rest of its life as a wingless ectoparasite.

Ensign Wasp

A parasitoid wasp that targets cockroach egg cases and helps control pest populations.

💡

Did You Know?

It bobs its flag-like abdomen up and down as it walks, resembling a tiny flag bearer.