Mountain Long-legged Fly vs Asian Cockroach

Side-by-side species comparison

Attribute Mountain Long-legged Fly Asian Cockroach
Scientific Name Dolichopus alpinus Blattella asahinai
Order Diptera Blattodea
Family Dolichopodidae Ectobiidae
Size 4-6 mm body length 13-16 mm
Habitat Meadows Underground
Diet Omnivores Omnivores
Regions Alps, Central European mountains Asia, North 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.

Asian Cockroach

Nearly identical in appearance to the German cockroach but with very different behavior, as it lives outdoors and is strongly attracted to lights. It is an excellent flier.

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Did You Know?

The Asian cockroach is so similar to the German cockroach that even experts sometimes need laboratory analysis to distinguish the two species.