Dark Rove Beetle vs Long-tailed Dance Fly

Side-by-side species comparison

Attribute Dark Rove Beetle Long-tailed Dance Fly
Scientific Name Tachyporus nitidulus Rhamphomyia longicauda
Order Coleoptera Diptera
Family Staphylinidae Empididae
Size 3-4 mm 5-8mm
Habitat Farmland Ponds & Lakes
Diet Predators Predators
Regions Europe, Siberia North America
Conservation Least Concern Least Concern

Dark Rove Beetle

A small, shiny dark brown rove beetle with a characteristic boat-shaped body. It is incredibly numerous in northern European farmland, where it is considered a key beneficial predator.

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Did You Know?

Pitfall trap studies have shown this to be one of the three most abundant beetle species in British agricultural landscapes.

Long-tailed Dance Fly

A small dark fly where females inflate their legs with air to appear larger during mating swarms. Males present nuptial gifts.

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Did You Know?

Females inflate their legs with air bubbles to look larger and more impressive to choosy males in mating swarms.