Neavei Black Fly vs Reindeer Warble Fly

Side-by-side species comparison

Attribute Neavei Black Fly Reindeer Warble Fly
Scientific Name Simulium neavei Hypoderma tarandi
Order Diptera Diptera
Family Simuliidae Oestridae
Size 2-3 mm 13-17 mm
Habitat Forests Heathland
Diet Herbivores Omnivores
Regions East Africa, including Uganda, Tanzania, Kenya Scandinavia, Finland, northern Russia, Siberia, Arctic Canada, Alaska
Conservation Least Concern Least Concern

Neavei Black Fly

A small black fly whose larvae uniquely attach to freshwater crabs rather than rocks or vegetation. It is a vector of river blindness in East Africa, particularly in forested areas. The association with crabs makes it vulnerable to control by removing the crab hosts.

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Did You Know?

Eliminating the freshwater crabs that carry its larvae successfully eradicated onchocerciasis from parts of East Africa.

Reindeer Warble Fly

A stout, furry fly that parasitizes reindeer and caribou. Females dart at reindeer to lay eggs on their legs. Larvae burrow through the skin and migrate through the body, creating warble lumps under the back skin.

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Did You Know?

The buzzing of this fly causes reindeer to panic and stampede, and heavy infestations can reduce a reindeer's body weight by up to 25 percent.