Dance Fly with Feathered Legs vs Little Black Caddis

Side-by-side species comparison

Attribute Dance Fly with Feathered Legs Little Black Caddis
Scientific Name Rhamphomyia sulcata Chimarra obscura
Order Diptera Trichoptera
Family Empididae Philopotamidae
Size 5-8 mm 6-9 mm
Habitat Rivers & Streams Rivers & Streams
Diet Nectar Feeders Omnivores
Regions Europe Eastern North America
Conservation Least Concern Least Concern

Dance Fly with Feathered Legs

A small dance fly where females have distinctive feathered or pennate leg scales used to attract males. Females inflate their abdomen to appear larger during swarming displays.

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Did You Know?

In a rare reversal, females are the ornamented sex, using feathered legs and inflated abdomens to compete for males.

Little Black Caddis

A small, dark caddisfly that builds finger-shaped silk nets in stream crevices. It is widespread in warm-water streams across eastern North America.

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Did You Know?

Its silk capture tube is among the finest-meshed nets of any caddisfly, trapping microscopic food particles.