Walking Leaf vs Neavei Black Fly

Side-by-side species comparison

Attribute Walking Leaf Neavei Black Fly
Scientific Name Phyllium philippinicum Simulium neavei
Order Phasmatodea Diptera
Family Phylliidae Simuliidae
Size 60-100 mm 2-3 mm
Habitat Forests Forests
Diet Herbivores Herbivores
Regions Asia East Africa, including Uganda, Tanzania, Kenya
Conservation Least Concern Least Concern

Walking Leaf

Perhaps the most remarkable camouflage in the insect world — an entire insect that looks exactly like a green leaf, complete with veins, midrib, spots, and even fake bite marks.

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Did You Know?

Walking leaves are such perfect leaf mimics that even their eggs look like plant seeds — and their gentle swaying walk perfectly imitates a leaf blowing in the breeze.

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.