Window Gnat vs Hyllus Beetle

Side-by-side species comparison

Attribute Window Gnat Hyllus Beetle
Scientific Name Sylvicola fenestralis Dynastes hyllus
Order Diptera Coleoptera
Family Anisopodidae Dynastinae
Size 5-7 mm 45-80 mm
Habitat Underground Mountains
Diet Sap Feeders Sap Feeders
Regions Europe Mexico, Guatemala, Honduras
Conservation Least Concern Not Evaluated

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.

Hyllus Beetle

A Central American Hercules-type beetle smaller than its famous relative. Males have proportionally shorter horns.

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Did You Know?

They are found at higher elevations than most other Dynastes species in Central America.