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Black fly.jpg
Adult Black Fly with Onchocerca volvulus emerging from the insect's antenna.
Scientific classification
Kingdom: Animalia
Phylum: Nematoda
Class: Secernentea
Order: Spirurida
Family: Onchocercidae
Genus: Onchocerca

Onchocerca is a genus of parasitic roundworm. It contains one human parasite - Onchocerca volvulus - which is responsible for the neglected disease Onchocerciasis, also known as "River Blindness" because the infected humans tend to live near rivers where host black flies live. Over 40 million people are infected in Africa, Central America, and South America.[1] Other species affect cattle, horses, etc.

List of species[edit]

Life cycle of Onchocerca volvulus


  1. ^ "Medical Microbiology", Indiana State University. Accessed 14 February 2008.

External links[edit]