Spine-legged Robber Fly vs Tropical Bat Fly

Side-by-side species comparison

Attribute Spine-legged Robber Fly Tropical Bat Fly
Scientific Name Diogmites angustipennis Cyclopodia horsfieldi
Order Diptera Diptera
Family Asilidae Nycteribiidae
Size 12-18 mm 3-5 mm
Habitat Deserts & Drylands Caves
Diet Predators Parasites
Regions North America South Asia, Southeast Asia, Australia
Conservation Least Concern Least Concern

Spine-legged Robber Fly

A slender amber-colored robber fly with conspicuously spined legs. It hunts from the ground in open sandy or rocky areas.

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Did You Know?

Its heavily spined legs form a basket-like cage to trap prey in mid-air.

Tropical Bat Fly

A bizarre wingless bat fly with extremely long spider-like legs and a flattened body. It is a specialist parasite of fruit bats in tropical Asia.

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Did You Know?

Its legs are so long relative to its body that it can crawl rapidly through bat fur while maintaining grip during flight.