Onchocerciasis Black Fly vs Bee Killer Robber Fly

Side-by-side species comparison

Attribute Onchocerciasis Black Fly Bee Killer Robber Fly
Scientific Name Simulium damnosum Mallophora bomboides
Order Diptera Diptera
Family Simuliidae Asilidae
Size 2-4 mm 20-28 mm
Habitat Rivers & Streams Farmland
Diet Blood Feeders Herbivores
Regions Africa Eastern United States from New England to Florida
Conservation Least Concern Least Concern

Onchocerciasis Black Fly

The primary vector of river blindness in West and Central Africa. Larvae thrive in oxygen-rich rapids of tropical rivers.

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Did You Know?

This species complex transmits the parasitic worm Onchocerca volvulus, which has blinded millions across Africa.

Bee Killer Robber Fly

A large fuzzy robber fly that closely resembles a bumble bee in both appearance and buzzing flight. It perches on vegetation and launches aerial attacks on passing insects.

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Did You Know?

Its bumble bee mimicry is so convincing that it can sit among real bees at flowers without being recognized as a predator.