Mandibularis Stag Beetle vs Window Gnat

Side-by-side species comparison

Attribute Mandibularis Stag Beetle Window Gnat
Scientific Name Hexarthrius mandibularis Sylvicola fenestralis
Order Coleoptera Diptera
Family Lucanidae Anisopodidae
Size 50-115 mm 5-7 mm
Habitat Forests Underground
Diet Sap Feeders Sap Feeders
Regions Sumatra, Indonesia Europe
Conservation Not Evaluated Least Concern

Mandibularis Stag Beetle

One of the largest stag beetles in the world with immense curved mandibles. Glossy black with powerful jaws.

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Did You Know?

Males can reach 115mm in total length, making them among the largest stag beetles ever recorded.

Window Gnat

A small, delicate fly with dark-spotted wings often found resting on windows and walls. Larvae develop in fermenting organic matter and tree sap runs.

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Did You Know?

Despite being one of the most commonly encountered flies on windows throughout Europe, this species remains largely unstudied and overlooked by entomologists.