Common House Mosquito vs Ochraceum Black Fly

Side-by-side species comparison

Attribute Common House Mosquito Ochraceum Black Fly
Scientific Name Culex pipiens Simulium ochraceum
Order Diptera Diptera
Family Culicidae Simuliidae
Size 4-7 mm 1.5-3 mm
Habitat Wetlands Mountains
Diet Blood Feeders Blood Feeders
Regions Worldwide temperate regions Mexico, Guatemala, southern Mexico, Central America
Conservation Least Concern Least Concern

Common House Mosquito

A ubiquitous pale brown mosquito found in urban and suburban environments. It is the primary vector of West Nile virus in temperate regions.

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Did You Know?

Underground populations in the London Tube have evolved into a distinct biting form called Culex pipiens molestus.

Ochraceum Black Fly

A small orangish-brown black fly that is the principal vector of onchocerciasis in Central America and southern Mexico. It breeds in small, fast-running mountain streams. Biting activity peaks in the early morning and late afternoon in coffee-growing regions.

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Did You Know?

The Americas are close to eliminating onchocerciasis thanks to mass ivermectin distribution targeting this vector's parasite.