Demon Charaxes vs Neavei Black Fly

Side-by-side species comparison

Attribute Demon Charaxes Neavei Black Fly
Scientific Name Charaxes lucretius Simulium neavei
Order Lepidoptera Diptera
Family Nymphalidae Simuliidae
Size 70-90 mm wingspan 2-3 mm
Habitat Forests Forests
Diet Dung Feeders Herbivores
Regions Central Africa (Cameroon, Gabon, Congo, DRC) East Africa, including Uganda, Tanzania, Kenya
Conservation Least Concern Least Concern

Demon Charaxes

A large forest Charaxes with deep black upperside marked with blue iridescence in males. Females are larger and browner. The underside has intricate leaf-like patterning providing excellent camouflage.

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Did You Know?

When resting with wings closed, this butterfly is almost invisible against the bark of forest trees thanks to its cryptic underside.

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.