Deer Ked vs High-altitude Hover Fly

Side-by-side species comparison

Attribute Deer Ked High-altitude Hover Fly
Scientific Name Lipoptena cervi Platycheirus alpinus
Order Diptera Diptera
Family Hippoboscidae Syrphidae
Size 5-7 mm 6-9 mm body length
Habitat Woodlands Meadows
Diet Blood Feeders Nectar Feeders
Regions Europe, Asia, introduced to North America Northern Europe, Alps, Arctic
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.

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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.

High-altitude Hover Fly

A small hover fly with flattened front legs, found in alpine and arctic habitats. It is an important pollinator of mountain wildflowers.

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Did You Know?

Its flattened front tarsi are thought to help scrape pollen from flowers.