Mountain Long-legged Fly vs Mexican Cactus Fly

Side-by-side species comparison

Attribute Mountain Long-legged Fly Mexican Cactus Fly
Scientific Name Dolichopus alpinus Copestylum mexicanum
Order Diptera Diptera
Family Dolichopodidae Syrphidae
Size 4-6 mm body length 12-18 mm
Habitat Meadows Deserts & Drylands
Diet Omnivores Nectar Feeders
Regions Alps, Central European mountains North America, Central America
Conservation Least Concern Least Concern

Mountain Long-legged Fly

A metallic green fly with long legs found in damp alpine meadows. Males perform elaborate courtship displays using their ornamental leg scales.

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Did You Know?

Males wave their decorated legs like flags during courtship to impress females.

Mexican Cactus Fly

A large, dark hoverfly whose larvae develop in decaying cactus tissue. Adults are strong fliers visiting flowers in arid landscapes.

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Did You Know?

Larvae play an important ecological role in recycling decaying cactus material.