Onchocerciasis Black Fly vs Japanese Genji Firefly

Side-by-side species comparison

Attribute Onchocerciasis Black Fly Japanese Genji Firefly
Scientific Name Simulium damnosum Luciola cruciata
Order Diptera Coleoptera
Family Simuliidae Lampyridae
Size 2-4 mm 12-18 mm
Habitat Rivers & Streams Rivers & Streams
Diet Blood Feeders Omnivores
Regions Africa Japan
Conservation Least Concern Vulnerable

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.

Japanese Genji Firefly

An aquatic-larval firefly revered in Japanese culture, found near clean streams. It is one of the few fireflies whose larvae develop entirely in freshwater.

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Did You Know?

Annual firefly-viewing festivals called hotarugari have been held in Japan for over a thousand years in honor of this species.