Mountain Dance Fly vs Spring Firefly

Side-by-side species comparison

Attribute Mountain Dance Fly Spring Firefly
Scientific Name Empis pennipes Photinus ardens
Order Diptera Coleoptera
Family Empididae Lampyridae
Size 5-8 mm body length 5-8 mm
Habitat Rivers & Streams Woodlands
Diet Predators Predators
Regions Europe, Alps, Scandinavia North America
Conservation Least Concern Least Concern

Mountain Dance Fly

A predatory fly with feathery leg fringes used in aerial mating displays. Males offer prey gifts wrapped in silk to females during courtship.

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Did You Know?

Males with the most elaborate feathered legs are preferred by females during mating swarms.

Spring Firefly

A small early-season firefly of the eastern United States with a distinctive fast double-pulse flash pattern. It has a dark body with a pinkish-red pronotum and is among the first fireflies to appear each year.

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Did You Know?

This species often begins flashing earlier in the evening than most other North American fireflies.